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Guanghua brand anti-theft doorbell electronic lock circuit
Source: InternetPublisher:同住地球村 Keywords: Door magnetic switch relay electronic lock Updated: 2024/11/04
The circuit is shown in the figure. It consists of a door-controlled magnetic switch, a relay control circuit, a "ding dong" doorbell sounding circuit, a simulated police car sounding circuit, etc. It can be used as a doorbell, and can also be used for anti-theft alarms for breaking into the door.
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