Window Door Alarm Security for Home, Sensor Alarm, Home Security System Burglar, Wireless Alarm System for Office, Home (Batteries Included) - Product Features
SMART DESIGN : The Door alarm gets activated when magnetic stripe is separated more than 0.39inch(10mm), it keeps going off until you close door (make both units connect) or manually turn it off.
EASY INSTALLATION :Wipe the flat surface, peel off sticker, mount the alarm on door and magnetic stripe on door frame adjacent to each other. No wiring needed! No screws needed!
BATTERIES : 3 LR44 batteries included in pack. NOTE: Take out the plastic insulation sheet in battery compartment before use
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