How to change the battery with the driving key?

Use a small screwdriver or plastic crowbar to gently pry open the remote control housing. Be careful not to damage the internal circuit during crowbar operation, especially before operation in winter, you can touch the metal to release static electricity. For the detachable mechanical key, it is necessary to remove the mechanical key first, pry it at the gap with the mechanical key, and then pry it along the gap to open the whole box cover.

After opening the key cap of the remote controller, you can see the battery, the model is CR2032, just take it out and replace it. Then pay attention to the positive and negative directions when installing, close the key cap after installing the battery, and press the button to try whether the function is normal.

Composition of remote control key

The system is mainly composed of transmitter and receiver.

Transmitter: It consists of transmitting switch, transmitting antenna (keyboard), integrated circuit, etc. It includes an identification code storage circuit and an amplitude modulation circuit, and a button-type lithium battery is installed opposite to the circuit. Select the transmission frequency according to the radio standard of the user's country, and send a signal every time the transmission switch presses the button.

Receiver: after the transmitter sends out the identification code by short-wave modulation, it is received by the short-wave antenna of the car, and the distributor enters the short-wave high-frequency amplification processor of the receiver electronic control unit for demodulation, and is compared with the identification code of the demodulator; If it is the correct code, it will be input into the control circuit and make the actuator work.

Refer to the above? Baidu encyclopedia-remote control key