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Megnatic switch sensor
It works with a small magnet closing the circuit when door opens the magnet goes away and thus opening the circuit which results in noise of alarm.It is simplest instrument home security system
both separated parts are fixed on separated parts of door and door panel.
It is resetable.
Lloyd Security provides home security systems to thousands of Minnesota residents and offers competitively-priced, customized security monitoring systems to accommodate each customer’s needs.
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