Refrigerator and Freezer Door Alarm Sensor - Anti-theft Magnetic Switch for Supermarket and Home.

Enhance the security and efficiency of your refrigerator and freezer with this innovative door alarm sensor. Designed for both home and supermarket use, this device features a sensitive magnetic switch that triggers an alarm when the door is opened, ensuring that no unauthorized access goes unnoticed. Its easy installation and reliable performance make it an essential tool for preventing theft and energy loss. Ideal for anyone seeking to safeguard their refrigeration units, it combines practicality with peace of mind. Order Number: 1 magnetic switch + 1 receiver (door needs to be closed, rings when opened) Power Supply Mode: AC Voltage: 110-220 Ring: 52 types of music, 5 volume levels adjustable to only flash lights Type: Induction doorbell Manufacture country: China Instructions included: No