Alps# SKEYAB028A. S.P.S.T., normally-open. "Soft-feeling" rubberized pushbutton for pc or breadboard mounting. 7.8 x 7.8 x 5mm. 1mm travel. Orange button on black base. Rated 12 Vdc @ 5 mA, 500m Ohms contact resistance max. 120gm activation force. 4 pieces minimum order