Tunnel emergency telephone terminal

The utility model provides a tunnel emergency telephone terminal, including the shell communication module interior with being fixed in this shell, this communication module includes a main control unit and a 2M interface circuit who is connected with this main control unit, a photoelectric sensor circuit and a voice circuit, this 2M interface circuit external cable, and the at least pileup of this photoelectric sensor circuit connection, this voice circuit connects a speaker and a microphone. The sealed processing is done to the whole shell in this terminal, and can prevent dust, protect against moist, electromagnetic interference resistance etc. The good reliability, the function is comprehensive, can satisfy the operation requirement under the tunnel adverse circumstances. 本实用新型提供种隧道应急电话终端，包括外壳和固定于该外壳内的通信模块，该通信模块包括主控单元和与该主控单元连接的2M接口电路、光电传感器电路和语音电路，该2M接口电路外接电缆，该光电传感器电路连接至少扳键，该语音电路连接扬声器和麦克风。本终端整个外壳做密封处理，能够防尘、防潮、防电磁干扰等，可靠性好，功能全面，能够满足在隧道恶劣环境下的使用要求。