... ROHS,IP40 1. Installation diemeter: 8MM;contact: sillver with goldplating.2. operation: auto-reser and auto-lock;3. ... products shows: indicator lamp, push button switch with lamp push button switch, selector switch, with lamp selector switch, key switch, double push button switch, emergency stop switch, ... diemeter : 8mm,10mm,12mm,16mm,22mm,25mm; 8mm small momentary illuminated push button switch