系列位免螺丝弹簧式印刷电路板型端子台，本产品方便的接线方式极适合在通信系统照明系统安防系统与建筑物的布线使用。
Tlm screwless terminal block the tlm series suits in the communications system, the lighting system, guards against the system and the building wiring use peacefully.
GQ -继电器。超小型封装扁平极化继电器。操作功能单面稳定。线圈额定值12 V直流。磁带和卷轴包装。表面贴装端子A型。
GQ-relay. Ultra-small package flat polarized relay. Operating function single side stable. Coil rating 12 V DC. Tape and reel packing. Surface-mount terminal a type.
注意，当7158型开关卡上没有通道被激励时，端子2和4是被连接到皮安计（pA）的LO端子的，它在电气上为保护端子。
Note that when none of the channels on the Model 7158 card are energized, terminals 2 and 4 are connected to the LO of the picoammeter (pA), which electrically is the guard terminal.
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