Door Alarm Window Alarm Sensor 100db Pack of 2
Magnetic door and window sensor triggers a 100 db alarm when opened more than .78 inches, includes four LR44 batteries and adhesive tape for tool-free mounting, pack of two
- 100 dB siren deters intruders instantly
- Magnetic contact triggers after 2 cm separation
- OFF, chime or alarm modes suit any entry point
- Adhesive tape mount needs no tools or wiring
- Two LR44-powered sensors cover doors, windows, pool gates
Magnetic Sensor Kit
The pack contains two magnetic contact sensors that sound a 100 db alarm when a door or window opens more than .78 inches. They are suited to homeowners, renters and small-business owners who want a simple, battery-powered alert without professional monitoring.
No-Wiring Installation
Each unit mounts with the supplied double-sided tape on a clean, dry surface; no screws or wiring are required. The alarm and magnet must be aligned with arrows facing and kept within 20 mm when closed, otherwise the siren will not reset.
Two-Mode Operation
A three-position switch selects OFF, CHIME or full ALARM, letting the user choose a gentle entry tone or the full 100 db siren. Four LR44 cells per sensor are included, and the alarm sounds continuously until the contact is restored.
Not for Monitored Systems
Buyers who need central-station monitoring, smart-home integration or sensors that report status to a phone app will not find those features here. The device is a standalone audible deterrent only.
Highlights
- 100 dB siren deters intruders instantly
- Magnetic contact triggers after 2 cm separation
- OFF, chime or alarm modes suit any entry point
- Adhesive tape mount needs no tools or wiring
- Two LR44-powered sensors cover doors, windows, pool gates
Specifications
No published specifications for this item yet.
Questions about this item
How do I confirm the 100db alarm is triggering correctly after mounting?
Set the switch to ALARM, open the door or window until the magnet separates more than .78 inches (20mm), and the siren will sound continuously until the gap is closed again.
What comes in the pack and do I need to buy batteries separately?
The pack includes two alarm units, two magnets, double-sided adhesive tape, and four LR44 batteries (44) already installed.
Which mode should I select on the OFF/CHIME/ALARM switch for a loud intruder alert?
Choose the ALARM position for the 100db siren; CHIME gives a softer tone and OFF disables the unit entirely.
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