Ward wireless call transmitting and receiving display circuit (M303S/M303R)

Relevant key device information applied in this article: VD5206 VD5027 M303S CD4069 CD4514 7806 LM386 HFC9301 This circuit adopts wireless transmission mode and uses stable radio transceiver module M303S/M303R and digital codec VD5026/VD5027. It works stably and reliably and can display Call the bed number or room number, easy to install. The radio frequency emission power of this circuit is very small and will not affect the normal operation of medical equipment. The ward wireless call system consists of a radio call transmitter in the ward and a radio receiving display installed in the medical duty room. The circuit principle of the radio call transmitter is shown in the figure. The circuit principle of the radio receiving display is shown in the figure below