适用于隧道、矿山、海洋、地下、地铁站、铁路站台、公路边、宾馆、停车场、钢铁厂、化工厂、电厂及相关重型工业应用等。特点1。防破坏的轧制钢材料。2.重型手持设备,兼容助听器接收器,消音麦克风。3.耐破坏锌合金键盘和手机与装甲线。4.顶部装有LED灯,当有来电时,灯会闪烁。5. The sensitivity of the speaker and microphone can be adjusted. 6. Multiple housings and colors. 7. IP defend grade IP66. 8. Self-made telephone spare part available. 9. CE, FCC, RoHS, ISO9001 compliant. Specifications Voltage AC220V±10%,50Hz Standby Work Current ≤0.2A Frequency Response 250~3000 Hz Amplified output power 10W Corrosion Grade WF1 Ambient Temperature -40~+60℃ Atmospheric Pressure 12V (±15%) / 1A DC or PoE Relative Humidity ≤95% Lead Hole 3-PG11 Light Flashing Frequency 1Hz Installation Wall-mounted