Analog Explosion proof Handsfree One Button Emergency Intercom Telephone JWBT831
JOIWO analog explosion‑proof hands‑free emergency telephone is developed for flammable and explosive hazardous industrial locations. It adopts classic analog POTS telephone technology, powered directly by existing PBX/PABX telephone line without extra power supply, very suitable for old‑factory reconstruction and projects with reserved analog telephone infrastructure.Handset‑free full‑duplex design, single physical button for one‑touch emergency hotline calling. On‑site workers wearing heavy safety gloves can quickly establish communication with central control room. Robust 304 stainless‑steel housing achieves WF2 salt‑spray resistance, reliable performance for offshore platform, seaside port and corrosive chemical workshops.
1. 304 Stainless‑Steel Heavy‑duty Housing: Brushed 304 stainless‑steel enclosure, shock‑resistant, anti‑rust, WF2 salt‑spray resistance, perfectly adapt to offshore seaside, heavy‑corrosion chemical workshops. IP66 dust‑proof and water‑jet resistant.
2. Analog Line‑powered Design, No External Power Needed: Draw power directly from existing analog PBX / PABX / PSTN telephone line. No power supply adapter, simplify site wiring and construction, ideal for legacy industrial reconstruction projects.
3. One‑Button Emergency Hotline Speed‑dial, Glove‑friendly Hands‑free Operation: No keypad, no handset. Pre‑store target hotline number locally. Press physical button to dial control‑room number immediately. Operable with heavy safety gloves. Full‑duplex bidirectional conversation, no hand‑holding required during communication.
4. Industrial‑grade Audio Processing: Built‑in echo cancellation and noise‑reduction algorithm, suppress heavy factory background noise. High‑power built‑in loudspeaker ensures clear voice transmission under high‑noise working conditions.
5. Certified Explosion‑proof Mechanical Structure: ATEX / IECEx certified for Zone1 & Zone2 explosive gas hazardous locations. Equipped with explosion‑proof cable glands, fully meets hazardous‑area wiring safety requirements.
6. Suitable for Legacy Analog System Renovation: Fully compatible with traditional analog scheduling host, industrial PBX, PABX telephone exchange. Perfect replacement for old‑style explosion‑proof telephones during plant upgrade projects. Simple wall‑mount installation and routine maintenance.
7. Optional Expandable Functions
‑ Trigger external alarm beacon / warning light
‑ Auto‑hang‑up timer function
‑ Surge & lightning protection for telephone line input
‑ Offshore Oil & Gas Platform
‑ Petrochemical & Chemical Plant
‑ Oil Refinery
‑ Coal & Metal Mine
‑ Port & Seaside Terminal
‑ Wastewater Treatment Plant
‑ Hazardous‑zone Power Station
‑ Old‑factory analog‑system renovation
| Item | Technical data |
| Explosion-proof mark | Ex d ib IIC T6 Gb/EX tD A21 IP66 T80℃ |
| Power Supply | Phone Line |
| Standby Work Current | ≤0.2A |
| Frequency Response | 250～3000 Hz |
| Corrosion Grade | WF2 |
| Ambient Temperature | -30～+60℃ |
| Atmospheric Pressure | 80～110KPa |
| Relative Humidity | ≤95% |
| Lead Hole | 1-G3/4” |
| Installation | Wall mounted |
If you have any color request, let us know the Pantone color No.
85% spare parts are produced by our own factory and with matched test machines, we could confirm the function and standard directly.
Q1: Does this analog phone need external power supply?
A: No. It is line‑powered, drawing power directly from analog PBX/PABX telephone line. No extra power adapter required.
Q2: What PBX systems is this analog phone compatible with?
A: It supports standard analog POTS / PABX / industrial scheduling host. Works with most traditional analog telephone exchange devices.
Q3: Is this unit suitable for offshore salt‑spray environment?
Q4: Do you provide ATEX / IECEx certificates?
