The domestic wireless burglarproof alarm circuit

Published:2011/7/6 9:04:00 Author:qqtang | Keyword: wireless burglarproof alarm | From:SeekIC

The circuit principle1. The invasion detector and micro alarm emitterIn figure 1 is the principle diagram of the invasion detector and the micro alarm emitter. The small magnet and the reed pipe E of normally closed contactor compose the invasion detector, the small magnet is fixed at the door leaf of the storeroom, the reed pipe E, which is close to the magnet, is installed on the corresponding door frame. Usually, the door is closed, as the magnet is close to E, so the 2 normally closed contators in E is switched off because of the external effect, and the micro emitter is not working without power.



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