Self-locking switch: simple structure, good spring resilience, press the button to turn on and off, easy to operate. Dimension: 18 x 12 x 10mm / 0.71 x 0.47 x 0.39" (L*W*H) (pin not included). Terminal: 2 pin; Model: KAN-28, Rated voltage voltage: DC 30V, Rated current: 1.5A, Contact resistance: 100M ohm max, insulation. Resistance: 100M ohm min, Withstand Voltage: AC 500V/1min. Working principle: push button switch is a switch that uses a button to push the transmission mechanism to turn on or off a moving contact with a static contact and switch the circuit. Usage: latching push button switch, widely used in household appliances, electric torches, flashlights or electronic DIY projects. In the electric automatic control circuit, it is used to send the control signal manually to control the contactor, relay, electromagnetic starter, etc. Package Content: 40pcs x Push Button Switch20pcs flat pin with hole + 20pcs bent pin with hole.