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多功能监听报警器王毅该仪器具有６路监听、报警功能，可同时监听６处语音信息，并可实现无人监听时自动报警，特别适合银行、仓库、单位的夜间自动看守及监狱的监听工作。仪器由监听探头、信号放大（主机）、控制转换面板、电源等４大部分组成，安装方便、工作可靠。一、...
Multi-functional monitoring alarm Wang Yi The instrument has 6 monitoring, alarm function, can monitor 6 voice messages at the same time, and can automatically alarm when no monitoring, especially for banks, warehouses, units at night automatic caretaker and prison monitoring jobs. Instrument from the probe, signal amplification (host), control conversion panel, power supply and other four major components, easy installation, reliable work. one,...