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Anti-theft wireless warning circuit diagram

2016-11-11 17:02  
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Anti-theft wireless warning circuit diagram
Circuit is shown as above. It is composedof radio frequency (FM) radio transmitter and receiver circuit. When someone broke into the house, the wireless transmitters send FM signals and make the sound of breaking glass. You can listen itaway fromhundred meters, then the power amplifier drives speaker Bto emit sound.