天车开关航吊开关--两位/四位/六位/八位，单层点通触点，双层点通触点：单常开常闭，双常开常闭；带急停按钮或ON/OFF按钮，体积小巧轻便，质量可靠。HY-1022BHY-1022SBHY-1024BBHY-1024SBHY-1024ABHY-1024STBHY-1026BBBHY-1026SBBHY-1026ABBHY-1026TBBHY-1028ABBBHY-1028ADBB)