135-9156, C & K, C & K IP40 Grey Button Tactile Switch, SPST 50 mA 3.5 (Dia.)mm Through Hole, Brand C & K, Contact Configuration SPST, Terminal Type Pc Pin, Switch Operation Momentary C & K IP40 Grey Button Tactile Switch, SPST 50 mA 3.5 (Dia.)mm Through Hole