General description This 2 Pack Freezer Door Alarm and Window Security Alarm features a versatile 4 in 1 mode system designed to enhance security for your home and appliances. With a loud 108dB alarm, it effectively deters intruders and alerts you when doors are left open. Technical specifications Alarm volume: 108dB Modes: Time-out alarm, General alarm, Constant alarm, Door opening chime Time-out settings: 3/15/30/60 seconds Installation Simple peel and stick installation Compatible with most freezers, refrigerators, and doors Installation distance between alarm and magnetic strip should not exceed 0.78 inch Ensure alignment of the two parts using the alignment arrow Usage Time-out alarm sounds if the door is left open for the set duration General alarm stops when the door is closed Constant alarm continues even when the door is closed Door opening chime sounds "DingDong" when the door is opened Other information (Batteries are not included) Widely used for home security, including