Door & Window Burglar Alarm Sensor — 1 or 2 Pack

Peace of mind shouldn't require a complicated setup.

This compact magnetic alarm sensor mounts in seconds — no drilling, no wiring. Stick the main unit to the door or window frame and the auxiliary unit to the door itself. The moment they separate by more than 10mm, a 90dB alarm sounds instantly.

Simple to arm and disarm with the built-in switch. Runs on included button batteries (3 × LR44). Works on doors, windows, and sliding panels.

Details

• Alarm volume: >90dB
• Power: 3 × 1.5V LR44 (AG13) button batteries — included
• Installation: Adhesive mount, no tools required
• Available as: 1-piece or 2-piece set