Elevator push button 1.Material: metal 2.Sensitive 3.Long life and competitive Description : 1. The push button adopts zinc alloy ... ,2No,2NC,1NO1NC.4. the locknut (regular type, super thin type )push button are installed into thickness 1.2mm to 3mm ... emergency lighting , different indictor, key switch etc.6. LED recall, LED colors are available : Assembling Figure & installation Dimensions Material & ...