(Practical and Durable)----Simple operation, direct switch without contactor. The control switch is made of PC flame-retardant material shell, pure copper material, copper tip, nickel-plated screw, waterproof button, with plastic protective cover, waterproof, oil-proof, longer use [Widely Used] ---- This is a waterproof control switch, a holding switch, a drilling switch and a machine button. Widely used in machinery and equipment, textile machinery, distribution boxes, ships, operating rooms, etc. The multi-function control switch is suitable for industrial equipment, production equipment, complete sets of cabinets, factory workshops, etc. (Switch Details)---- Self-locking ON button, self-resetting OFF button. The control switch is in open working mode, the model is ka0-10kh, and the distance between the installation holes is about 7.7 cm. The mechanical life of the control switch is about 1 million times, and the electrical life is 500,000 times [Wiring Details] ---- Suitable for AC