Microwave detection radio alarm (S%26P27)

Relevant key device information applied in this article: TWH9250 YYH26 S%26;P27A S%26;P27B YYH27 CD4067 XG-902N (a) In the figure, when the detection circuit TWH9250 detects the target signal, its output terminal O outputs low level, then relay K is turned on. After the transmitting circuit obtains the working power supply, the address code encoded by the encoding circuit YYH26 is amplified by S%26;amp;P27A, and then transmitted outward by the antenna. The detection circuit is used to turn on the working power of the transmitter. The address code sent by the transmitter circuit indicates the detection location where the transmitter is located. (b) The figure shows the multi-channel receiving alarm circuit.