10Pcs Micro Roller Lever Arm Open Close Limit Switch KW12-3 PCB Microswitch Features:Operating temperature: -40C to 70CRated voltage: AC 125V-250VCurrent rating: 5ASize: 20 x 10 x 6mm (L X W X H)PCB Terminals Circuit BoardWith Roller Lever LimitWorking principle:1.By external mechanical force transmission elements (by pins, buttons, levers, rollers, etc.) will be used to force action on a reed,2.Producing reed instantaneous action when action shifted to the critical point,3.so moving contact with the fixed contact spring at the end of the action point fast on or off.4.When the force is removed on the drive components,5.Ction reed produce reverse action force transmission element reverse stroke6.The action reaches a critical point reed, instantaneous reverse action.Feature: contact spacing is small,short stroke action,according to the power of small,fast-breakApplication:Apply in A computer mouse, car mouse, automobile electronic products, communications equipment,military products, test instrument, gas water heater, gas burner, small home appliance,microwave oven, electric rice cooker, floating ball supporting equipment,medical equipment, building automation, electric tools, e