The basic composition of the remote control key

The transmitter in the remote control key shell: consists of a transmitting switch, a transmitting antenna (keyboard), an integrated circuit, etc. It contains an identification code storage circuit and an amplitude modulation circuit, and a button-type lithium battery is installed on the opposite side of the circuit. The transmission frequency is selected according to the radio standard of the country of use, and a signal is sent every time the transmission switch is pressed.