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Friedland HIS77A Wireless Door Window Contacts Pack of 2 Friedland HIS77A P This pack of 2 Friedland Wireless Door Window Contacts are ideal for protecting addittional doors and windows in your home When the door or window is closed a magnet keeps a switch closed When the door or window is opened the switch opens and sets off the alarm if it is set P P Friedland HIS77A Wireless Door Window Contacts are fully compatible with both GlobalGuard and Response Premium Wireless Alarms P Fr
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