• Low consumption design, they can work for over 2 years;

• Wireless alarm battery operated, it need two aaa alkaline batteries ( not included );

• Low battery warning, when it need replace batteries, the led light will flash once every second;

• Self-adhesive, easy to install and operate, all you need to do is peel off the adhesive tape that comes with the alarm and sensor and stick it on in the direction of the arrow.

Wireless fridge alarm goes off if the freezer door stays open for 3/15/30/60 seconds, you can easily to set the delay time as your need. It will only alert you when freezer door has been left open for 3s/15s/30s/60s, it will not annoying you while you want the door open

Simple peel and stick installation, easy to install on any freezer/fridge or any door without any tools, come with adhesive tapes

This alarm with 4 modes, it’s not only a refrigerator alarm, but also a door alarm for home security helps deter intruder/thieves effectively by 108dB loud alarm, and can be door open chime help notify you if children/pet or others are coming/ going. You can easy to set appropriate mode as your need

4-in-1 Mode: 1. Time Delay Alarm (sounds “Di-Di-Di” from 0dB to 108dB if door stays open for 3/15/30/60s) 2. General Alarm (alarm stop if door closed); 3. Constant Alarm (constant alarm even door closed); 4. Door Open Chime (sounds “DingDong” once door opens)

Low battery warning. Installation Note: Ensure close the alarm and magnetic strip, the installation distance between them should not exceed 0.78 inch. The 2 parts need be aligned by their alignment arrow