Noopel Door & Window Alarms 2-Pack, 120/90dB

NOOPEL Door Alarms 2 Pack are compact, battery-powered magnetic sensors that emit a 120dB or 90dB alert when a door or window is opened.

These upgraded NOOPEL entry alarms offer a straightforward, no-wiring solution to add an audible layer of protection to doors, windows, sliding glass doors, RVs, dorms and more. The pair of units include magnetic triggers, adhesive mounting pads and LR44 batteries so they are ready to use out of the box. Two volume settings let you choose a piercing deterrent for intruders or a milder chime to warn children or remind a forgetful family member.

How loud are these alarms and when should I use each volume?

The NOOPEL alarms provide two selectable sound levels: a high 120dB setting designed to startle intruders and awaken sleepers, and a lower 90dB setting better suited for child safety or frequent door use. Use high for windows and exterior doors where an immediate deterrent is needed; use low for interior doors, nurseries, or monitored exits.

• High: 120dB — strongest deterrent for break-ins or emergencies.
• Low: 90dB — audible warning without overwhelming noise indoors.
• Off: conserves batteries when alarm not needed (simple three-position switch).

How do I install and position the NOOPEL door and window alarms?

Installation is entirely tool-free: peel the included double-sided adhesive and stick the alarm body and magnet within 10mm (0.39 inch) of each other on the door and frame. Small, slim housings fit most frames; ensure the sensor side has 0.4 inches of clearance and align the magnet for reliable triggering.

• Peel-and-stick mounting — no screws, no wiring required.
• Maintain gap less than 10mm between alarm and magnet for correct operation.
• Compact 2.9" x 1.5" x 0.4" size works on doors, windows and sliding panels.

What power do these alarms use and how will I know when batteries run low?

Each alarm is powered by three LR44 button-cell batteries, which are included so the devices are operational immediately. A built-in low battery indicator notifies you when replacement cells are needed, helping maintain reliable performance without unexpected downtime.

• Comes with 3 LR44 batteries per alarm for instant setup.
• Low battery indicator warns before the alarm weakens or stops.
• Battery operation makes units portable for rented rooms, RVs, and temporary setups.

Who is this for? NOOPEL Door Alarms are intended for anyone wanting a low-cost, easy-to-install audible alert for doors and windows: parents who wish to prevent toddlers from wandering out, caregivers who need reminders for seniors, renters who cannot install wired systems, people who want a supplementary deterrent for belongings, and hosts wanting simple security in guest rooms or short-term rentals. These alarms are best for indoor personal security and situational alerts where portability, quick setup, and adjustable volume are priorities.