<p>4-in-1 Mode: This alarm has 4 modes.</p> <p>1. Synchronization Alarm ("Di-Di-Di" sound from 0dB to 108dB)</p> <p>2. General Alarm (alarm stops if the door is closed);</p> <p>3. Continuous Alarm (continuous alarm when the door is closed);</p> <p>4. Doorbell ("ding dong" sound when the door is opened)</p> <p>108dB Loud Siren: The door and window siren helps effectively deter intruders/thieves with a 108dB loud siren. You can easily set the appropriate mode according to your needs.</p> <p>Easy Installation: Simple peel-and-stick installation, easily installs on most freezers/refrigerators or any door without any tools.</p> <p>Package includes 2 refrigerator alarms</p> <p>Installation Notes: Make sure to turn off the alarm and magnetic strip, and the installation distance between them should not exceed 0.78 inches. The 2 parts should be aligned by their alignment arrows.</p> <p>2 years on 2 AA batteries. (Batteries not included)</p> <p>Wide range of uses: The magnetically triggered door alarm sensor protects the house through door and window entrances, suitable for safes, wardrobes, freezers, refrigerators, swimming pool sliding doors, shops, offices, apartments, hotels, etc.</p> <p>108dB 4-in-1 Magnetic Door Alarm Alarm</p> <p>Scenes to be used</p> <p>Wide range of uses: The magnetically triggered door alarm sensor protects the house window entrance through the door, suitable for safes, wardrobes, freezers, refrigerators, swimming pool sliding doors, shops, offices, apartments, hotels, etc.</p> <p>Easy installation: Simple peel-and-stick installation, easily installs on most freezers/refrigerators or any door without any tools.</p> <p>Wide Range of applications</p> <p>Multifunctional:</p> <p>1. Refrigerator, fridge, freezer door alarm reminder</p> <p>2. Home security door and window alarms</p> <p>3. Store security cabinet door alarm</p> <p>Package included:</p> <p>2 refrigerator alarms</p> <p>Battery powered, it requires two AAA alkaline batteries (not included).</p> <p>This is a physical image. When the battery is installed, the indicator light will turn red.</p> <p>Low power design:</p> <p>Low power design, can work for more than 2 years.</p> <p>Low battery warning, the LED indicator will flash every second when the battery needs to be replaced.</p>