Wireless Security Alarm Sensor for Doors and Windows

Know the moment a door or window opens.

This wireless sensor set pairs two compact magnetic pieces that sound a loud siren-style alarm when they separate. Each sensor measures about 2.75" x 0.79" x 0.79", so it sits low and stays out of the way on most doors, windows, and cabinets.

Setup is tool-free. Clean the surface, peel the adhesive, and stick each piece on adjacent surfaces so they meet when closed. From there you can monitor and adjust settings through a phone or laptop, whether you're home or out. Each unit runs on an included CR-series battery, so there's no wiring or outlet to deal with.

Why we picked it

• Instant alert - The siren sounds as soon as the paired sensors pull apart.
• Goes anywhere - Use it on doors, windows, gates, playpens, cabinets, and drawers.
• No drilling - Adhesive mounting and battery power suit renters and homeowners alike.

Good to know

Each sensor is about 2.75" x 0.79" x 0.79" and includes a CR-series battery. Mount on flat, clean surfaces for the best hold. Monitoring works through a compatible phone or laptop.

Common questions

Q: How do I install it?
A: Clean the surface, peel the backing, and stick each sensor on adjacent surfaces so they line up when closed.

Q: Does it need wiring?
A: No. Each unit uses an included CR-series battery.

Q: Can I check it remotely?
A: Yes, through a compatible phone or laptop interface for alerts and settings.