Refrigerator Freezer Door Sensor Alarm: Door Open Reminder & Anti-theft Alert for Shops & Homes

Keep your perishables safe and secure with this innovative sensor alarm designed for refrigerators and freezers. This device alerts you when a door is left open, preventing spoilage and energy waste. It also serves as an anti-theft alert, providing an added layer of security for both shops and homes. Operating efficiently within a voltage range of 100 to 240 volts, it is versatile and compatible with most electrical systems. Power supply mode: Door magnet uses battery, Receiver plugs in Ring: 60 songs, 5 volume levels Power consumption: 0.5 Scope of application: Straight-line distance of 280 meters in an open area Type: Induction doorbell Manufacture country: China Instructions included: No

voltage: 100.000000 - 240.000000