The distance between the switch and the ground is generally about 1.3 meters to 1.4 meters, and the distance from the door is 10cm to 20cm. The installation height of switches and sockets directly affects the convenience and comfort of people. The distance of about 1.3 meters is not easy for children to reach. It will be more convenient for adults to use them. The switch can power on and off the equipment, and can prevent leakage. and short-circuit hazards.