... 3.Long life and competitive Description : 1. The push button adopts zinc alloy body with anti-impact design , the surface ... type :1NO,1NC,2No,2NC,1NO1NC.4. the locknut (regular type, super thin type )push button are installed into thickness 1.2mm ... close door , alarm ,telephone, emergency stop, emergency lighting , different indictor, key switch etc.6. LED recall, LED colors are available : Assembling ...