Smart Door Open Sensor Alarm: Fridge, Freezer, Shop Doorbell & Window Security

Enhance the security of your home or business with this versatile and intelligent door open sensor alarm. Designed for use on refrigerators, freezers, shop entryway doors, and windows, it promptly alerts you when any door or window is left open. The device is easy to install and features a high-sensitivity sensor that accurately detects opening and closing motions. With adjustable alarm volume settings, you can tailor the sound to suit different environments and applications. Whether you want to prevent costly energy waste from a fridge door left ajar or secure your premises with a reliable doorbell alert system, this sensor alarm offers a practical solution. Its sleek design ensures it complements any setting while providing peace of mind with its dependable performance. Power Supply Mode: Plug in or install batteries Voltage: 5 Ring: Have Power Consumption: 1 Scope of Application: Door and window anti-theft, freezer Type: Induction doorbell Specification: Ringing + Door Magnet Manufacture country: China Instructions included: No