Digital coding remote control switch (digital codec MC145026/MC145027 micro radio transceiver module M303S/M303R)

Relevant key device information applied in this article: MC145026 MC145027 M303S M303R 9013 The digital codec switch composed of digital codec MC145026/MC145027 and micro radio transceiver module M303S/M303R is shown in the figure below. Press the transmitter button SA, and the circuit is It works electrically, and the serial coded signal is output from pin 15 of MC145026, and is modulated and transmitted by the transmitter module M303S. The receiving module M303R in the receiving circuit receives and demodulates the coded signal and sends it to the decoder MC145027. When the address codes of the codec are completely consistent, the decoding valid indication terminal of MC145027 outputs a high-level pulse signal, and the transistor VT is turned on. , drives the relay to close, completing the switch control function.