Magnetic Door Window Alarm – 90dB, 2-Pack, Battery Powered

Sliding a window open at 2 a.m. makes no noise. Neither does a door being pushed inward while you sleep. What stops that from going unnoticed is a 90dB magnetic alarm that activates the instant the two sensor halves separate—and the Magnetic Door Window Alarm 2-Pack puts that protection on two entry points for the price of a fast-food lunch.

Who This Door and Window Alarm Is For

Renters who cannot drill into frames, college students securing a dorm room, parents who need to know the moment a child slips out a window, and homeowners who want supplemental coverage on a garage door or basement window—this alarm is purpose-built for those scenarios. It is equally useful for anyone who needs a fully operational sensor within five minutes of opening the package, without scheduling an installer or paying a monthly monitoring fee.

Is It the Right Fit for You?

Choose It If You Want

• Instant adhesive installation—no tools, no drilling, no damage to frames
• Battery-powered operation that stays active during a power outage
• A two-unit pack that covers two separate entry points at once
• An on/off switch so you can open a window for fresh air without triggering the alarm

Consider Another Option If You Need

• Smartphone alerts or remote monitoring via an app
• Integration with a broader smart-home security ecosystem
• Detection of motion inside a room rather than at the entry point itself
• Glass-break detection triggered by vibration or sound frequency

Magnetic Door Window Alarm Features and Benefits

• 90dB Magnetic Trigger: The alarm activates the instant the magnet and sensor separate—no delay, no motion zone to calibrate.
• Adhesive Installation: Peel-and-stick backing secures both components to virtually any door or window frame in under five minutes.
• On/Off Switch: Disable the unit for routine use and re-arm it for overnight or away-from-home protection without removing it from the frame.
• Batteries Included: Three LR44/AG13 1.5V button cells come in the package—ready to operate out of the box.
• Compact Profile: Each unit measures 2½” x 1¾” x ¾” and sits flush against the frame with minimal visual footprint.
• 2-Pack Value: Two complete alarm units ship together, covering a front door and a window, or any two entry points you prioritize.
• 1-Year Warranty: Backed by a manufacturer’s one-year warranty for reliable, low-maintenance service.

How the Magnetic Door Window Alarm Compares

Understanding where this alarm excels—and where other sensor types have the advantage—makes the buying decision straightforward.

Care and What’s Included

What’s in the Box

• Two complete magnetic door and window alarm units
• Adhesive strips for installation
• Three LR44/AG13 1.5V button cell batteries (pre-installed)

Care and Maintenance

Wipe the sensor housing with a dry cloth to remove dust—moisture can affect the adhesive bond over time. When battery life decreases and the alarm tone weakens, replace the three LR44/AG13 button cells. The on/off switch keeps contacts clean during periods of heavy use; cycling it monthly prevents oxidation on the switch terminals.

Magnetic Door Window Alarm: Frequently Asked Questions

How loud is the Magnetic Door Window Alarm?

Each unit produces a 90dB alarm tone the instant the magnetic sensor and the magnet separate. At that decibel level, the alert is clearly audible across a standard room and is loud enough to wake a sleeping occupant or startle an intruder at the entry point.

How do you install the Magnetic Door Window Alarm?

Peel the backing from the adhesive strips, press the sensor body to the door or window frame, and press the magnet piece to the door or sash so the two halves align when closed. No drilling, no screws, and no special tools are required. Most installations take less than five minutes per unit.

How long do the batteries last?

Battery life depends on how frequently the alarm triggers. The three included LR44/AG13 button cells power standby mode for an extended period under normal residential use. Using the on/off switch during times when the door or window is in active use helps preserve battery capacity significantly over time.

Can this alarm be used on both doors and windows?

Yes. The magnetic sensor design works on any entry point where the two halves can be aligned in the closed position and separated when the door or window opens—standard hinged doors, sliding glass doors, double-hung windows, and casement windows are all compatible mounting surfaces.

Add Entry-Point Protection Today

Two entry points. Five minutes. No monthly fees. Add the Magnetic Door Window Alarm 2-Pack to your cart and have both units installed before the end of the day. If coverage on a third or fourth entry point is a priority, order multiple packs to build out your perimeter.