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SMY—CH_1型矿用电话查线器(以下简称查线器)是煤矿本质安全型自动式或共电式通讯系统的线路维修工具。能检查线路的断路或短路,能对电子电话机振铃呼叫,能向共电式、自动式电话机供电通话,也可以用于煤矿井下有瓦斯、煤尘爆炸危险场所,做为局部独立通讯工具,
SMY-CH_1 mine telephone wire checker (hereinafter referred to as wire checker) is a coal mine intrinsically safe automatic or co-electrical communication system line maintenance tools. Can check the circuit open circuit or short circuit, can ring the call to the electronic phone, can supply electricity to the common electric type, automatic telephone conversation, can also be used for underground coal mine gas, coal dust explosion dangerous place, as local independent communication tool,