Feature Highlights: 1. 4-in-1 Smart Alarm Modes – Choose the mode that fits your needs: - Delay Alarm (beeps “Di-Di-Di” from 0dB to 108dB if the door stays open for 3/15/30/60 seconds). - General Alarm (stops when the door is closed). - Constant Alarm (keeps sounding even after the door is closed). - Door Chime (plays a “Ding-Dong” tone each time the door opens). 2. Loud 108dB Alert – This powerful alarm helps scare off intruders or remind you when a door is left open. You can easily pick the right mode for your home or business. 3. Quick & Easy Setup – Just peel and stick! No tools needed. Works on most doors, freezers, refrigerators, cabinets, and windows. Each pack includes 2 alarms, 2 magnetic strips, double-sided tape, and a user guide. 4. Installation Tip – Make sure the alarm unit and the magnetic strip are aligned using the arrows, and keep them within 0.78 inches of each other for reliable operation. Runs on 2 AA batteries (not included) for up to 2 years. 5. Versatile Use – Great for homes, offices, shops, hotels, apartments, safes, cabinets, freezers, refrigerators, pool gates, and more. Helps keep your spaces secure and reminds you when doors are left open. Product Details: This 4-in-1 door and window alarm offers flexible security modes to fit different situations. It features a loud 108dB alarm to deter unwanted entry or alert you of open doors. Installation is simple—just stick it on and align the sensor. Perfect for use on freezers, refrigerators, cabinets, entry doors, and windows. The set includes 2 alarms with magnetic strips and adhesive for easy mounting. Specifications: - Alarm Modes: 4 (Delay Alarm / General Alarm / Constant Alarm / Door Chime) - Sound Level: Up to 108dB - Power: 2 x AA batteries (not included, battery life up to 2 years) - Installation: Peel-and-stick, tool-free - Included: 2 alarm units, 2 magnetic strips, double-sided tape, user manual - Recommended Use: Doors, windows, freezers, refrigerators, cabinets, safes, offices, shops, hotels, and more