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burglar alarm system is an important part of home security systems. this intruder alarm or burglar alarm circuit is based on pir sensor, um3561 and speaker. pir sensor used here to detect body motion and um3561 & speaker to produce police siren after any movement detection.

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2/06/2020· shed doors usually swing out, so the hinge pins are accessible from outside; all a thief has to do is pop out the pins and remove the door.to stop this, buy a security hinge with tamper proof pins and a locking tab at a home center. or, you can retrofit an existing hinge by removing the center screws on both sides, inserting a finish screw through one side and allowing it to protrude about 1/4

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product title door and window alarm wireless magnetic anti theft average rating 3.9 out of 5 stars, based on 9 reviews 9 ratings current price $10.15 $ 10 . 15

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15/11/2015· forecum intelligent door/window infrared sensor alarm is consist of gsm modules with military quality. it provides voice monitoring, infrared induction and free remote gsm location function.

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a pir sensor measures infrared light that is reflected off moving objects that emit heat. they are commonly used to detect movement of people and animals to trigger alarms and security lighting. available in a range of styles for different usage areas indoor and externally, with pet friendly and smart technology options.

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