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Touch switch is a kind of electronic switch. When you use it, you can turn the switch on by lightly pressing the switch button. When you release the hand, the switch is turned off. Its internal structure is realized by the force of the metal spring. Because of its small size and light weight, microswitch has been widely used in home appliances, such as: color TV button, DVD player button, computer mouse and so on. But the microswitch also has its shortcomings. Frequent pressing will make the metal shrapnel lose its elasticity and failure. So now most electrical buttons are replaced by conductive rubber, such as computer keyboard, remote control, etc.

It can also be used to control light, exhaust fan and other small power household appliances. The electronic switch will not be connected automatically when the power supply is cut off automatically after the power supply is cut off again (it can be connected only by pressing the control button), so as to avoid power consumption or accidents caused by long-term power on of electrical appliances.