Curved screw connection curved screw terminals, clamps for very easy installation. Car ignition key high-quality metal materials and waterproof IP65 protection can be used in wet or dusty environments. Start switch panel - 16 mm, switching capacity: 3 A/250 VAC, switch: 1 no Engine start button: the push button is a momentary switch that only causes a temporary change of the state of an electrical circuit when the switch is physically activated. An automatic mechanism (such as a spring) returns the switch to its standard position immediately afterwards and restores the original state of the circuit. Start button often used as a vehicle horn, ignition switch, doorbell, button for household and car devices, project for technical equipment.