Anti-robbery alarm (RCM1A/RCM1B is the transceiver module)

Relevant key device information applied in this article: RCM1B NE555 9014 TWH68 circuit consists of a miniature radio transmitter and a receiving control alarm. The transmitter is powered by a button battery, is compact and easy to carry. Once an unexpected situation occurs, press the transmitter button and the receiver will sound a very loud alarm. The transmitter circuit is composed of transmitting module RCM1A, button battery and transmitting button; the wireless receiving alarm circuit is composed of receiving module RCM1B, monostable trigger, composite oscillation circuit, audio booster and high-loud speaker, power circuit, etc.