Freezer Door Alarm with Delay and Widely Use Upgraded versions with 3/15/30/60 seconds delay for your choice. Magnetic Trigger Door Alarm Sensor Protecting Home Through Door Window Entrance, Suitable for Safe, Closet, Freezer, Fridge, Fridge, Sliding Pool Door, Shop, Office, Apartment, Hotel, etc. 4 in 1 multi-function and easy to use 4 modes meet your multi-options: general alarm, constant alarm, delay (alarm when door closes) doorbell, just press the button to select the function you want with no hassle to select the setting. 108dB loud enough for your home security Door and window alarm helps effectively deter intruders/thieves with a loud 108dB alarm. Professional security system through easy installation Easy peel-and-stick installation and low-power design that provides convenient and long-term protection. You can work more than 2 years. Freezer/Fridge/Refrigerator door alarm with time delay French door alarm for home security / child safety