Sometimes you just need to know when a door or window opens. Not for full-scale security necessarily, but for awareness—and that’s exactly what these magnetic alarms deliver.
Who This Magnetic Door/Window Alarm Is Best For:
- Parents monitoring when kids open exterior doors or windows
- Anyone wanting to know when back doors or basement entries are accessed
- Caregivers watching for wandering by elderly or cognitively impaired individuals
- Apartment dwellers adding extra security to sliding doors or accessible windows
Is This the Right Magnetic Alarm for You?
Choose the 90db Magnetic Door/Window Alarm if you want:
- Notification the moment a door or window opens—not just when someone breaks it
- The ability to turn alarms off when you’re coming and going normally
- Two independent units to cover multiple entry points
Key Features: The design is beautifully simple. Each alarm comes in two pieces—a main unit with the alarm circuitry and a small magnetic piece. You mount one piece on the door or window frame, the other piece on the moving part of the door or window itself. When the door is closed, the magnets are together and everything’s quiet. The instant that door or window opens and the magnetic contact breaks, the 90dB alarm goes off. It continues sounding as long as the door stays open, then stops automatically when you close it again.
The on/off switch is your key to practical everyday use. When you’re home and moving around normally, you can switch the alarm to off mode so you don’t set it off every time you go outside. When you’re sleeping or away from home, switch it to on mode and you’ll know immediately if anyone opens that entry point. Installation uses peel-and-stick adhesive backing—no tools, no drilling, no permanent modifications. Works on wood, metal, or vinyl door frames and windows. Operates on three 1.5V button cell batteries per unit, which come pre-installed and included.
Quick Comparison: How Does the Magnetic Door/Window Alarm Stack Up?
| Feature | Magnetic Alarm | Motion Sensor | Smart Sensor | Contact Switch |
|---|---|---|---|---|
| Installation | Adhesive ✔ | Mounting screws | Adhesive | Wired |
| Detection | Door opening ✔ | Movement after entry | Door opening | Door opening |
| Volume | 90dB | Varies | App notification | Silent |
| On/Off Control | Built-in switch ✔ | Varies | App control | System dependent |
| Best For | Simple entry notification | Interior motion detection | Remote monitoring | Hardwired systems |
Practical Details: Each unit measures 2 1/2″ x 1 3/4″ x 3/4″ in white housing. Includes three 1.5V LR44/AG13 button cell batteries per unit, pre-installed. One-year manufacturer warranty. Works on any door or window configuration—hinged doors, sliding doors, double-hung windows, sliding windows.
Get instant notification when doors and windows open. Be Prepared and Be Safe!
Frequently Asked Questions
How far apart can the two magnetic pieces be before the alarm won’t work?
They need to be within about 1/2 inch of each other when the door or window is closed. This works fine for most standard installations. If you have an unusually wide gap between your door and frame, you may need to add a small spacer under one of the pieces to bring them closer together.
Does the alarm keep sounding continuously or does it shut off automatically?
The alarm sounds continuously as long as the magnetic contact is broken (door or window is open). When you close the door or window and the magnets reconnect, the alarm stops automatically. There’s no need to manually reset anything.
Can I use these on sliding windows that don’t fully close the gap?
Yes, as long as the two magnetic pieces can get within 1/2 inch of each other in the closed position. Many people use these successfully on sliding windows by mounting the pieces toward one end of the window where they’ll make proper contact.
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