... Sensitive 3.Long life and competitive Description : 1. The push button adopts zinc alloy body with anti-impact design , the ... 1NO1NC.4. the locknut (regular type, super thin type )push button are installed into thickness 1.2mm to 3mm faceplate . ... alarm ,telephone, emergency stop, emergency lighting , different indictor, key switch etc.6. LED recall, LED colors are available : Assembling Figure ...