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# Joiwo

## Sitemaps
[XML Sitemap](https://www.sinewo.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [How Do Railway Telephones Enhance On-Track Safety and Reduce Response Delays?](https://www.sinewo.com/how-railway-telephones-enhance-on-track-safety-reduce-delays/): Railway telephones provide immediate, reliable communication for on-track safety, enabling rapid hazard reporting, coordinating operations, and reducing emergency response delays.
- [How Can Tunnel Telephones Reduce Emergency Response Time in Underground Infrastructure?](https://www.sinewo.com/tunnel-telephone-reduce-emergency-response-time/): Tunnel telephones reduce emergency response time in underground infrastructure by providing reliable, dedicated communication where cell phones fail, ensuring rapid coordination and safety.
- [How Do Explosion-Proof Telephones Prevent Ignition in ATEX and IECEx Hazardous Zones?](https://www.sinewo.com/explosion-proof-telephone-ignition-prevention-atex-iecex/): Explosion-proof telephones prevent ignition in ATEX/IECEx zones by containing internal blasts and limiting energy. Learn how these devices ensure safe communication.
- [Why Are Industrial VoIP Phones Ideal for Remote Oilfields and Offshore Platforms?](https://www.sinewo.com/industrial-voip-telephone-remote-oilfields-offshore/): Industrial VoIP phones are ideal for remote oilfields and offshore platforms due to their ruggedness, advanced safety features, and cost-effectiveness, ensuring reliable communication.
- [Why Are Acoustic Hoods Needed to Reduce Noise and Improve Call Quality in Loud Facilities?](https://www.sinewo.com/acoustic-hoods-noise-reduction-call-quality/): Acoustic hoods reduce noise by 15-25 dB, creating quiet zones for clear calls in loud facilities. They improve speech clarity, reduce stress, and enhance safety.
- [What Makes Vandal-Resistant Emergency Phones Ideal for Public Safety Projects?](https://www.sinewo.com/vandal-resistant-telephone-public-safety-projects/): Vandal-resistant telephone systems offer unmatched durability, reliable functionality, and enhanced security, making them ideal for public safety projects.
- [How Do Wall-Mounted Industrial Phones Increase Efficiency in Equipment-Control Areas?](https://www.sinewo.com/wall-mounted-telephone-efficiency-equipment-control-areas/): Wall-mounted telephone systems provide immediate, hands-free communication in equipment-control areas, increasing efficiency, safety, and reducing downtime in industrial settings.
- [Why Do Factories Need Vandal-Resistant Phones in Public or High-Traffic Zones?](https://www.sinewo.com/factories-need-vandal-resistant-telephone-zones/): Factories need Vandal Resistant Telephone units in public or high-traffic zones to ensure critical communication, enhance safety, and maintain operational continuity against damage and misuse.
- [How to Build a Reliable Emergency Phone System in Hazardous Industrial Environments](https://www.sinewo.com/build-reliable-emergency-telephone-system-hazardous-industrial-environments/): Build a reliable Emergency Telephone system for hazardous industrial environments. Learn how to assess hazards, select durable tech, and maintain systems for worker safety.
- [Why Do Chemical Plants Rely on Intrinsically Safe Telephones for Hazardous Zone Communication?](https://www.sinewo.com/intrinsically-safe-telephone-chemical-plants-safety/): Intrinsically safe telephones prevent ignition in chemical plants by limiting energy, ensuring safe communication in hazardous zones. They are crucial for worker safety and regulatory compliance.
- [Why Petrochemical Plants Require Explosion Proof Telephones: 10 Critical Safety Reasons](https://www.sinewo.com/explosion-proof-telephone-petrochemical-plant-safety/): Petrochemical plants require Explosion Proof Telephones to prevent ignition, ensure emergency communication, and meet safety regulations. Discover 10 critical reasons for this vital safety equipment.
- [What Makes Heavy-Duty Telephones Essential for High-Vibration Industrial Manufacturing Sites?](https://www.sinewo.com/heavy-duty-telephone-high-vibration-manufacturing-sites/): Heavy-duty telephones are essential for high-vibration industrial manufacturing sites due to their robust design, ensuring reliable communication and enhanced safety where standard phones fail.
- [How Do Industrial Telephones Withstand Harsh Conditions in Mines, Tunnels, and Chemical Plants?](https://www.sinewo.com/industrial-telephone-harsh-conditions-mines-tunnels/): Industrial telephones endure harsh conditions in mines, tunnels, and chemical plants through robust construction, chemical resistance, explosion protection, and enhanced audio.
- [How Do Vandal-Resistant Telephones Survive Abuse in Public and High-Risk Environments?](https://www.sinewo.com/how-vandal-resistant-telephones-survive-abuse/): Vandal-resistant telephones survive abuse through robust construction, reinforced components, tamper-proof designs, and environmental hardening, ensuring reliable communication.
- [How Can Marine Telephones Resist Corrosion in Harsh Offshore Oil and Gas Environments?](https://www.sinewo.com/marine-telephone-corrosion-resistance-offshore-oil-gas/): Marine telephones resist corrosion in offshore oil & gas environments through robust materials like 316L stainless steel, advanced sealing (high IP ratings), and specialized coatings. This ensures reliable communication.
- [How Can Heavy-Duty Telephones Reduce Maintenance Costs in Harsh Industrial Locations?](https://www.sinewo.com/heavy-duty-telephone-reduce-industrial-maintenance-costs/): Heavy-duty telephones cut maintenance costs in harsh industrial locations by offering superior durability, reducing failures, and extending lifespan, ensuring reliable communication.
- [What Makes Explosion-Proof Phones Critical for Petrochemical Storage Facilities?](https://www.sinewo.com/explosion-proof-telephone-petrochemical-safety-critical/): Explosion-Proof Telephone devices are critical for petrochemical storage facilities. They prevent ignition in hazardous zones, ensuring safe and reliable communication without creating dangerous sparks.
- [How Can Wall-Mounted Emergency Phones Improve Response Time in Public Transit Stations?](https://www.sinewo.com/wall-mounted-emergency-telephone-improve-transit-response/): Wall-mounted emergency telephones improve response times in transit stations by providing direct, reliable communication and precise location identification, bypassing mobile phone limitations.
- [How Industrial Telephone Systems Improve Safety in High-Risk Worksites](https://www.sinewo.com/industrial-telephone-systems-safety-high-risk-worksites/): Industrial telephone systems improve safety in high-risk worksites through durable, noise-canceling, and emergency-ready communication. Discover how they prevent incidents.
- [Why Should Mining Sites Upgrade to Heavy-Duty VoIP Telephones for Better Reliability?](https://www.sinewo.com/heavy-duty-voip-telephone-mining-reliability-safety/): Upgrade mining site communication with Heavy-Duty VoIP Telephones. They offer superior reliability, durability, and critical safety features for extreme environments, ensuring clear calls and faster emergency response.
- [Why Must Oil Refineries Use Intrinsically Safe Telephones for ATEX Zone 1/2 Areas?](https://www.sinewo.com/intrinsically-safe-telephone-atex-zone-oil-refinery/): Oil refineries must use Intrinsically Safe Telephones in ATEX Zone 1/2 areas to prevent ignition of explosive atmospheres. Standard devices spark, posing severe risks.
- [Enhancing Tunnel Safety with IP66 Weatherproof Telephone Systems for Harsh Environments](https://www.sinewo.com/weatherproof-telephone-systems-tunnel-safety-ip66/): IP66 weatherproof telephone systems provide robust, dust-tight, and water-resistant communication for tunnels. They enhance safety, improve emergency response, and withstand harsh environments.
- [Why Explosion-Proof Telephones Are Critical in Oil, Gas, and Chemical Plants](https://www.sinewo.com/explosion-proof-telephone-critical-oil-gas-plants/): Explosion-proof telephones are critical in oil, gas, and chemical plants. They prevent ignition, ensure reliable communication, and meet safety standards, protecting lives and assets.
- [Why Should Hazardous Facilities Use Metal-Housing Telephones Instead of Plastic Models?](https://www.sinewo.com/metal-housing-telephone-hazardous-facilities-safety/): Metal-housing telephones offer superior durability, critical safety, and reliable communication in hazardous facilities. Their robust design outperforms plastic models, ensuring vital connections remain active.
- [Integrating Explosion-Proof Telephones with PAGA and Alarm Systems](https://www.sinewo.com/integrating-explosion-proof-telephones-paga-alarms/): Integrating explosion-proof telephones with PAGA and alarm systems creates a unified safety network, ensuring rapid communication and protecting personnel in hazardous areas.
- [How Flame-Proof Phones Help Prevent Accidents in Chemical Storage Zones](https://www.sinewo.com/flame-proof-telephone-prevent-accidents-chemical-zones/): A Flame-Proof Telephone prevents accidents in chemical storage zones by eliminating sparks, controlling surface temperature, and mitigating static discharge, ensuring safe communication.
- [Why IP68 Waterproof Telephones Are Critical for Tunnel, Subway, and Marine Projects](https://www.sinewo.com/ip68-waterproof-telephones-critical-tunnel-subway-marine/): IP68 Waterproof Telephones are critical for reliable communication in tunnels, subways, and marine projects. They ensure safety, efficiency, and emergency response in harsh conditions.
- [How to Maintain Industrial Telephones for Long-Term Outdoor Performance](https://www.sinewo.com/maintain-industrial-telephones-long-term-outdoor-performance/): Ensure your industrial telephone's longevity and reliability outdoors with proper installation, weatherproofing, surge protection, and routine maintenance checks.
- [The Importance of Reliable Communication in Hazardous Area Certification (ATEX/IECEx)](https://www.sinewo.com/industrial-telephone-atex-iecex-hazardous-comm/): Ensure safety and compliance in hazardous areas. Understand how ATEX/IECEx certified communication systems, including industrial telephone solutions, prevent risks and maintain operations.
- [How to Integrate Emergency Telephones into Security Control Centers](https://www.sinewo.com/integrate-emergency-telephone-security-control-centers/): Learn how to integrate emergency telephones into security control centers for enhanced safety. This guide covers planning, technology, and implementation for a robust emergency telephone system.
- [Hands-Free Hospital Telephones: The Future of Hygienic Communication](https://www.sinewo.com/hands-free-hospital-telephones-hygienic-communication/): Hands-free hospital telephones minimize germ transmission, enhance staff efficiency, and improve patient safety. Discover how this technology revolutionizes hygienic communication in healthcare.
- [Why ATEX Telephones Are the Future of Hazardous-Area Communication](https://www.sinewo.com/atex-telephone-future-hazardous-area-communication/): ATEX telephones provide intrinsically safe, robust communication for hazardous zones. They prevent ignition risks and withstand extreme conditions, ensuring worker safety and operational efficiency.
- [Balancing Security and Accessibility with Modern Anti-Vandal Telephones](https://www.sinewo.com/anti-vandal-telephone-security-accessibility-balance/): Modern Anti-Vandal Telephones combine robust security with accessibility features like Braille and HAC. They ensure reliable, inclusive communication in challenging environments.
- [Explosion-Proof IP Telephones: Bridging Safety and Connectivity](https://www.sinewo.com/explosion-proof-ip-telephone-safety-connectivity/): Explosion-Proof IP Telephones provide safe, reliable communication in hazardous areas by preventing ignition. Learn how these specialized devices bridge safety and connectivity.
- [How Emergency Help Point Telephones Improve Response Times and Save Lives](https://www.sinewo.com/emergency-telephone-improve-response-save-lives/): Emergency Telephone help points improve response times and save lives by providing instant, location-aware communication, overcoming mobile phone limitations.
- [Don’t Compromise Why Intrinsically Safe Industrial Telephones Are Non-Negotiable](https://www.sinewo.com/intrinsically-safe-industrial-telephones-non-negotiable-explosive-atmospheres/): Intrinsically safe industrial telephones are crucial in explosive atmospheres. They prevent ignition, protecting lives and operations where standard equipment poses catastrophic risks.
- [Protecting Assets and Personnel: Hazardous Area Telephones as a Critical Safeguard](https://www.sinewo.com/hazardous-area-telephones-critical-safeguard-assets-personnel/): Hazardous Area Telephones provide intrinsically safe communication, preventing ignition in dangerous zones. They are critical for protecting personnel and assets.
- [Integrating Elevator Telephones with Building Security for Faster Emergency Response](https://www.sinewo.com/integrate-emergency-elevator-telephone-security-response/): Integrating your Emergency Elevator Telephone system with building security provides direct communication, automated location data, and faster dispatch, significantly enhancing occupant safety.
- [How Elevator Emergency Phones Ensure Safety in High-Rise Buildings: A Look at a Critical Device](https://www.sinewo.com/elevator-emergency-telephone-safety-high-rise-buildings/): Elevator emergency phones are critical for high-rise safety. Discover how these devices provide a vital communication link, ensuring rapid response and passenger reassurance during incidents.
- [How Our Mine Telephones Ensure Clear Communication After a Cave-In or Blast](https://www.sinewo.com/industrial-mine-telephone-clear-communication-blast/): Our Industrial Mine Telephone ensures clear communication after a cave-in or blast with robust design, self-contained power, and noise-canceling tech for miner safety.
- [How to Select the Right Telephone for Nuclear Power Plant Safety](https://www.sinewo.com/select-industrial-telephone-nuclear-plant-safety/): Choosing an industrial telephone for nuclear power plant safety requires considering durability, radiation hardening, EMI/RFI shielding, and regulatory compliance.
- [Beyond Communication: How Vandal-Resistant Phones Fortify Correctional Facilities](https://www.sinewo.com/vandal-resistant-jail-telephone-fortify-facilities/): Vandal-resistant jail telephone systems enhance security, prevent contraband, and reduce operational costs in correctional facilities through durable design and integrated features.
- [Why Vandal-Resistant Prison Telephones are Essential for Secure Correctional Facilities](https://www.sinewo.com/vandal-resistant-prison-telephone-security-essential/): Vandal-resistant prison telephones are essential for secure correctional facilities, ensuring reliable communication, preventing illicit activities, and enhancing safety.
- [A Buyer’s Checklist for Sourcing Reliable Explosion-Proof Telephones](https://www.sinewo.com/explosion-proof-telephone-buyers-checklist-guide/): Ensure safety and compliance with our buyer's checklist for explosion-proof telephones. Understand certifications, technical specs, and durability for hazardous areas.
- [How Our Explosion-Proof Telephones Withstand Extreme Temperatures and Corrosive Gases](https://www.sinewo.com/explosion-proof-telephone-extreme-temperature-corrosive-gas/): Our Explosion-Proof Telephones withstand extreme temperatures and corrosive gases using specialized materials, hermetic seals, and industrial-grade electronics for reliable communication.
- [Why Your Refinery Needs Intrinsically Safe Emergency Telephones](https://www.sinewo.com/refinery-intrinsically-safe-emergency-telephone-need/): Refineries need intrinsically safe Emergency Telephones to prevent ignition in hazardous zones. Ensure reliable, spark-free communication during critical incidents.
- [Designing Unbreakable Communication: The Anatomy of a Vandal-Proof Prison Telephone](https://www.sinewo.com/vandal-proof-prison-telephone-unbreakable-communication-design/): Explore the engineering behind a Vandal-Proof Prison Telephone. Understand how robust materials, tamper-resistant features, and secure communication controls ensure durability and safety.
- [Industrial Telephone Systems: Vital Communication for Underground Pipe Gallery Safety](https://www.sinewo.com/industrial-telephone-systems-underground-pipe-safety/): Industrial telephone systems provide vital, reliable communication for underground pipe gallery safety. Discover how rugged industrial telephones ensure clear, immediate contact in hazardous environments.
- [How Can Explosion Proof Telephones Ensure Worker Safety in Oil Rig and Refinery Hazardous Zones?](https://www.sinewo.com/explosion-proof-telephone-worker-safety-hazardous-zones/): Explosion proof telephones ensure worker safety in oil rig and refinery hazardous zones by preventing ignition and enabling critical, reliable communication.
- [What Are the Key Considerations When Choosing an Emergency Telephone System for Long Tunnels?](https://www.sinewo.com/choosing-emergency-telephone-system-long-tunnels-key-considerations/): Choosing an emergency telephone system for long tunnels requires evaluating technical reliability, user accessibility, and emergency response capabilities. Prioritize continuous operation and safety.

## Pages
- [blog](https://www.sinewo.com/blog/)
- [contact](https://www.sinewo.com/contact/): Ningbo Joiwo Explosionproof Science & Technology Co.,Ltd
- [products](https://www.sinewo.com/products/): Follow us
- [about](https://www.sinewo.com/about/):  
- [home](https://www.sinewo.com/): Our line of industrial telephones are designed for heavy duty applications and can withstand harsh environments including extreme temperatures, humidity, vandalism, vibration and shock.
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## Products
- [Metal  Analog Voip telephone line powered  public weatherproof telephone for buildingJWAT316](https://www.sinewo.com/product/metal-analog-voip-telephone-line-powered-public-weatherproof-telephone-for-building/): This is a kind of public telephone with the protection class IP54,if it will be installed at the outdoor and dont have proof , we will strength the waterproof defend to IP65 depends on the customer’s demand.It is a solid case made of cold rolled steel with a powder coated finish for high mechanical strength and impact resistance, a highly reliable product with a long MTBF.The communication Mode could be chosen by analog , Voip ,GSM. With the production test with many tests like electric acoustical test,FR test,High&Low temperature test,working life test etc.,each waterproof telephone have been waterproof tested and obtain international certificates. Over 85% telephone parts like cradle, keypad, handset are self-made ,we can provide best competitive, quality assurance, after-sale for you.
- [Engineer Plastic Industrial Weatherproof Telephone for  Railway Project JWAT304](https://www.sinewo.com/product/engineer-plastic-industrial-weatherproof-telephone-for-railway-project-jwat304/): JWAT304 plastic waterproof telephone has IP and analog versions of two communication systems.With a waterproof rating of IP65~IP66, plastic water resistant telephone is the best choice for industrial manufacturing/tunnel corridors/defense communications/deep sea water and other industrial underground applications. This model is the most economical choice for customers and project contractor with limited budget. This weatherproof telephone can also be used beside swimming pool for houses.
- [Industrial Explosionproof Heavy Duty Telephone for Oil Gas Project JWBT810](https://www.sinewo.com/product/industrial-explosionproof-heavy-duty-telephone-for-oil-gas-project/): This JWBT810 Explosion Proof Heavy Duty Telephone is housed in a durable corrosion resistant aluminum alloy die casting for indoor or outdoor applications, Joiwo ’s Intrinsically-Safe Telephones are the safest and most economical communication solution in hazardous environments. With a professional R&D team in industrial hazardous telecommunication filed since 2005 Year, Each Explosion Proof Telephone have been passed the ATEX,FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the hazardous area industries.
- [Emergency handsfree telephone dust proof Industrial Intercom for Clean room JWAT401](https://www.sinewo.com/product/emergency-handsfree-telephone-dust-proof-industrial-intercom-for-clean-room/): This Emergency telephones is vandal and weather resistant, providing hands-free loud-speaking communications for any public area. The internal components are protected by a weather resistant enclosure behind the faceplate. Joiwo Intercom Telephones featured vandal resistant, steel material, IP54-IP65 waterproof defend grade which could be installed on indoor or outdoor , Easy to clean,high corrosion resistant, high mechanical strength and strong impact resistance. With a professional R&D team in industrial telecommunication solution filed since 2005 Year, Each Intercom Telephone have been passed the FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the Safety and Emergency communication.
- [Industrial SOS Weatherproof VOIP video emergency Intercom  for  elevator JWAT925](https://www.sinewo.com/product/industrial-sos-weatherproof-voip-video-emergency-intercom-for-elevator/): Video intercom utilizes a high-definition camera and a metal casing, making it suitable for subway stations, airports, and other public venues for emergency communication. The video intercom employs the IP protocol to access any SIP server, ensuring excellent call quality and a clear video image. Video intercom telephone, featuring a metal casing, exhibit corrosion-resistant and anti-destructive characteristics. They are designed for embedded installation and offer one-touch speed dial functionality. These intercom systems with cameras can be installed not only in residential settings but also serve as terminals for door intercom systems. The waterproof level is high and can be customized according to user requirements.
- [Emergency Voice Communication Systems Fire Telephone  Type A Outstations JWAT162-2](https://www.sinewo.com/product/emergency-voice-communication-systems-fire-telephone-type-a-outstations-jwat162-2/): Joiwo Fire Telephone Type A Outstations for Emergency Voice Communication Systems are available either as surface mounted units or flush-mounted units , featuring finishes in red cold rolled steel or stainless steel. Fire Telephones facilitate two-way communication between fire officers or individuals responsible for evacuating a building during an emergency. They enable speech communication between the Fire Telephone(s) and the operator stationed at the Control Panel. Typically, a fire officer will utilize the telephone outstation to confirm that an area or floor level is cleared of personnel.
- [Fire Telephone Metal Enclosure Outstations JWAT162-1](https://www.sinewo.com/product/fire-telephone-metal-enclosure-outstations-jwat162-1/): Joiwo is a pioneering manufacturer and supplier of fire telephone metal enclosures in China. Leveraging an experienced R&D team specialized in this field, we are committed to providing both domestic and international customers with highly cost-effective solutions. As a Chinese factory, Joiwo possesses the flexible capability to customize fire telephone metal enclosures according to specific customer requirements, including various appearances ,dimensions and inside main board.
- [Joiwo Highway Hands Free Backlit Waterproof Moisture Proof Speakerphone Emergency Intercom](https://www.sinewo.com/product/joiwo-highway-hands-free-backlit-waterproof-moisture-proof-speakerphone-emergency-intercom/): The waterproof speakerphone is widely used for Highway,roadside,railway,truck,packing lots,marine,tunnel, etc. As a Weather Resistant Telephone, it is made of a Cold Rolled steel spraying waterproof housing to provide complete protection against dust and moisture ingress, resulting in a highly reliable product with a long MBTF. Your first-choice provider of innovative communication solutions and competitive products  for the industrial communication.
- [Industrial Analog Voip Public Handsfree Speakerphone Intercom Safety SOS Emergency Telephone](https://www.sinewo.com/product/industrial-analog-voip-public-handsfree-speakerphone-intercom-safety-sos-emergency-telephone/): JWAT411 Rugged housing consists of SUS 304 stainless steel and equipped with a waterproof metal button for help dialing.Wiring in the back of the telephone, so that the phone looks beautiful and exquisite. Analog Type /Voip Type /GSM Type optional. Further, can install the camera to make a Video call according to the user’s demand, to enhances the security. Intercom is a flush or surface mounted unit. When installed with suitable interface sealants, a very high IP water resistant rating can be achieved. With a professional R&D team in industrial telecommunication solution filed since 2005 Year, Each Intercom Telephone have been passed the FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the industrial communication.
- [Explosionproof telephone Wall Mounted HandsFree Emergency Intercom for pharmaceutical labs](https://www.sinewo.com/product/explosionproof-telephone-wall-mounted-handsfree-emergency-intercom-for-pharmaceutical-labs/): The explosion proof Telephone JWBT813 is an emergency Intercom that specifically used for the harsh environment of Indoor industry.The telephone is rugged and durable which is intrinsically safe. This explosion proof telephone uses stainless steel as the raw material for the weatherproof enclosure, and the exterior is strong. HandsFree Type could satisfy the clean demand. With a professional R&D team in industrial hazardous telecommunication filed since 2005 Year, Each Explosion Proof Telephone have been passed the ATEX,FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the hazardous area industries.
- [Analog Voip Industrial Water-Resistant Telephone For Mining Project JWAT301](https://www.sinewo.com/product/analog-voip-industrial-water-resistant-telephone-for-mining-project/): It is an industrial heavy duty waterproof telephone which is fully contained within a corrosion resistant cast aluminium alloy weatherproof case.With a door providing complete protection against dust and moisture ingress, resulting in a highly reliable product with a long MTBF.The case is very thick, closed to explosion-proof requirements. With the production test with many tests like elextroacoustical test,FR test,High&Low temperature test,working life test etc.,each waterproof telephone have been waterproof tested and obtain international certificates. We have our own factories with self-made telephone parts，we can provide competitive, quality assurance, after-sale protection of waterproof telephone for you.
- [Industrial Weatherproof VOIP Intercom telephone for Tunnel](https://www.sinewo.com/product/industrial-weatherproof-voip-intercom-telephone-for-tunnel/): Ningbo Joiwo is a Tunnel telephone/Railway telephone/Highway telephone manufacture. We produce large quantity of Tunnel telephone and export to many countries. Industrial weatherproof telephones are widely used in railway trackside. Most of metro line under ground inside the tunnel need to install Tunnel telephone. This Subway telephone installed at tunnel and subway need waterpoof IP66. The Subway telephone need to be rugged and rubost. Rugged telephones waterproof IP66 dusty proof for -outdoor environment. Tough telephones with door and handsfree hotline call. work on in rugged conditions in analogue and VOIP. It is specially designed to use in high wet environment of all kinds of electric power tunnel, with the characteristics of high protection, and low power consumption. A line can support 10 sets of telephones, and the standard of DTMF code sending exceeds 10 kilometers. With 3W speakers built-in, voice is clear and loud. The transmission distance could reach to 10 kilometers without additional power supply.
- [Industrial  IP Weatherproof Telephone for Tunnel Project](https://www.sinewo.com/product/industrial-ip-weatherproof-telephone-for-tunnel-project/): It is an industrial weatherproof outdoor telephone which is fully contained within a corrosion resistant cast aluminium alloy waterproof case.With a door providing complete protection against dust and moisture ingress, resulting in a highly reliable product with a long MTBF. With a professional R&D team in industrial telecommunication filed since 2005 Year, Each weatherproof telephone have been waterproof tested and obtain international certificates. We have our own factories with self-made telephone parts，we can provide competitive, quality assurance, after-sale protection of weatherproof telephone for you.
- [Rugged Wall Mounted Inmate Telephone With Volume Control Button JWAT137](https://www.sinewo.com/product/rugged-wall-mounted-inmate-telephone-with-volume-control-button/): Are you looking for a highly reliable prison telephone communication system with vandal-proof intercoms and inmate telephones as a part of your Jail security solution? Joiwo team is able to supply both standard and customized inmate telephone systems composed of a two-way conversation and public address broadcasts (PAGA system). Joiwo Telephones featured vandal resistant, stainless steel material,high corrosion resistant, high mechanical strength and strong impact resistance.The primary function of communications is maintained at all times, resulting in a highly reliable product with a long MTBF. With a professional R&D team in industrial public telecommunication filed since 2005 Year, Each vandal proof Telephone have been passed the FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the Prison communication.
- [Mini Wall Small Direct dial ringdown Prison telephones for health center JWAT145](https://www.sinewo.com/product/mini-wall-small-direct-dial-ringdown-prison-telephones-for-health-centere-no-dial-analog-voip-courtesy-jail-telephone-%e5%a4%8d%e5%88%b6/): Joiwo's Mini Wall Telephone Series are specifically designed for high vandalism areas subject to fraud and abuse. The health center is a important area and it need more efficient ,clean, safety for communication . Joiwo Telephones featured vandal resistant, stainless steel material,high corrosion resistant, high mechanical strength and strong impact resistance.The primary function of communications is maintained at all times, resulting in a highly reliable product with a long MTBF. With a professional R&D team in industrial public telecommunication filed since 2005 Year, Each vandal proof Telephone have been passed the FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the health center communication.
- [Vandal Proof Visitation telephone No-Dial Analog Voip Courtesy Jail Telephone JWAT146](https://www.sinewo.com/product/vandal-proof-visitation-telephone-no-dial-analog-voip-courtesy-jail-telephone/): Joiwo’s Auto Dial Vandal Proof, Armored Hotline Visitation No-Dial Phone ,is offer direct efficient communication for prison visitation areas, dormitories,correctional Institution,control rooms, hospitals,police stations, ATM machines, airports, stadiums, gate and entryways. With a professional R&D team in industrial public jail telecommunication filed since 2005 Year, Each vandal Resistant Telephone have been passed the FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the Jail communication.
- [Hotline Automatic dial Vandal Proof Public Telephone for Correctional institute JWAT135](https://www.sinewo.com/product/hotline-automatic-dial-vandal-proof-public-telephone-for-correctional-institute/): Joiwo’s Auto Dial Vandal Proof, Armored Hotline Visitation No-Dial telephone ,is offer direct efficient communication for prison visitation areas, dormitories,correctional Institution,control rooms, hospitals,police stations, ATM machines, airports, stadiums, gate and entryways. With a professional R&D team in industrial public jail telecommunication filed since 2005 Year, Each vandal Resistant Telephone have been passed the FCC,CE international certificates. Your first-choice provider of innovative communication solutions and competitive products  for the Jail communication.
- [Joiwo IP Office Telephone JWA001](https://www.sinewo.com/product/joiwo-ip-office-telephone-jwa001/): Joiwo JWA001 IP Phone is an industrial masterpiece offers superior user experience and simplicity for home and office users with elegant appearance and intelligent software.It is positioning to be not only a telephone siting on a user’s desktop for communication, but also a nice artwork in your living room or office.
- [Desktop VOIP Visualization Paging Console Phone with a Gooseneck Microphone JWDT668](https://www.sinewo.com/product/desktop-voip-visualization-paging-console-phone-with-a-gooseneck-microphone-jwdt668/): The product is a visualization paging console phone . It is equipped with a gooseneck microphone and supports HD hands-free calling. It is compatible with the standard SIP protocol and can be used as a monitoring center or host for office manager with functions such as make calls for external and internal phones, two-way intercom, monitoring, and broadcasting. With intelligent programmable DSS buttons, you can set up a one-click call function to improve communication efficiency.
- [16/24-Port 10/100Mbps Desktop/Rackmount Network Switch JWDT1024D](https://www.sinewo.com/product/16-24-port-10-100mbps-desktop-rackmount-network-switch-jwdt1024d/): The 16/24-Port 10/100Mbps Desktop/Rackmount Switch provides you with a high-performance,low-cost,easy-to-use,seamless and standard upgrade to improve old network to 100Mbps network.All 16/24 ports support auto MDI/MDIX,so there is no need to worry about the cable type, simply plug and play. Moreover, with the innovative energy-efficient technology, it can reduce power consumption and the vast majority of its packaging material can be recycled,making it an eco-friendly solution for your business network. This new 16/24-Port 10/100Mbps Desktop/Rackmount Switch features the latest innovative energy-efficient technologies that can greatly expand your network capacity with much less power.The switch limits the carbon footprint of your network by automatically adjusting power consumption in accordance with link status and cable length.It complies with the EU RoHS,which prohib- its the use of certain hazardous materials,and most of the packaging material is recyclable.
- [Telecom system  VoIP IP PBX – C200](https://www.sinewo.com/product/telecom-system-voip-ip-pbx-c200/): C200 is an IP telephony system, which is used to help small and medium-sized enterprises establish a convenient and high-efficient communication way. The gateway provides 2 FXO ports and 2 FXS ports, and meanwhile it can be extended based on the Session Initiation Protocol (SIP). Interworking with traditional PBX and third party IPPBX system, it allows users to communicate through voice, fax, data or video.
- [Analog Telephone Adaptor Cost-Effective FXS VoIP Gateway JWDT1000-1S/2S](https://www.sinewo.com/product/analog-telephone-adaptor-cost-effective-fxs-voip-gateway-jwdt1000-1s-2s/): JWDT1000-1S/2S is a multi-functional analog telephone adapter which offers seamless connectivity between IP Telephony networks and legacy telephones (POTS), fax machines and PBX systems. The device provides 1 or 2 FXS port(s), fax over IP and a built-in high-speed NAT router. These powerful features and good voice quality make the device ideal for various application environments such as SOHO and small enterprises and for personal use. Moreover, with automatic provisioning and centralized management system, the device is easy to maintain and deploy.
- [FXO Analog VoIP Gateway JWDT1000-8O](https://www.sinewo.com/product/fxo-analog-voip-gateway-jwdt1000-8o/): JWDT1000-8O FXO Analog VoIP Gateway is a type of access gateway offering seamless connectivity between IP-based telephony networks and legacy telephones (POTS) and PBX systems. The analog gateway has 8 FXO ports and is used to connect to analog PBX or the PSTN lines of telecom carriers. With the standard SIP protocol, it's compatible with leading IMS/NGN platforms and SIP-based IP Phone systems. It provides low-cost and easy-to-use VoIP solutions for small and medium businesses, call centers, SOHO, remote offices as well as enterprises with multiple branches.