恶劣的环境电话KNSP-18LCD

模拟 网络电话 SIP

用途:作为室内或室外公共电话，出租车或公交车站，公路电话亭，铁路，地铁，ATM机旁，隧道，港口，码头，矿山，发电设施…在潮湿或腐蚀性环境中使用的理想电话。坚固的铝合金压铸体，防Vandal和防篡改的五金件，安装简单。2.自动拨号，你一拿起话筒，电话就会接通。或一个按钮可选。耐候性符合IP66标准，使用温度范围:-35度至+75度磁簧钩开关电话线路供电。无需外部电源或电池备份。 6. Lightening protection to ITU-T recommendation K.21 7. Handset: made of special engineering plastic, high anti-knock resistance, Weatherproof, armoured cable optional, 8. Hearing Aid compatible receiver, Noise canceling microphone. 9. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational. 10. Selectable 7 minute time out, to release the line if the handset is left off hook. 11. Ingress Protection: GB4208-93 IP66 EMC: EN55022/EN55024/EN50121-3-2: 2006 FCC LCD Display Caller ID Dialing number Conversation time counting An outer metal casting, sealing, waterproof rating to IP66. Using this telephone, to meet the communication requirements for outdoor, and not easily damaged, long life, good stability.