1. HIGH SENSITIVITY: Magnetic sensor detects your door or window. The alarm sounds when the window or door is opened. High sensitivity quickly alerts you to the status of your doors and windows. 2. ULTRA LOUD 108 DECIBEL ALARM SOUND: Supports 108db alarm. When someone illegally opens a door or window, the alarm can sound a loud alert to warn intruders to leave and notify the homeowner. 3. MULTIPLE MODES SUPPORT: The door and window alarm is designed with general alarm, constant alarm, door closed alarm, doorbell mode, off, or disabled. 4. EASY TO INSTALL AND USE: The window alarm sensor can be easily installed on windows or doors with double-sided tape, no tools required. 5. DOOR ALARM: The magnetic door sensor is ideal for entry alerts for homes, apartments, RVs, offices, hotel rooms, garages, and more. Item Type: Door Window Alarm Material: ABS Alarm Volume: 108 DB Battery Life: Standby time over 2 years (based on 5 switches per day) Alarm Batteries: AAA x 2 (not included) Operating Ambient Temperature: -10℃ to +60℃ Operating Humidity: R/H <80% Storage Temperature: -20℃ to +70℃ 1 x Door Window Alarm 1 x Magnetic Components 3 x Double-sided Tape 1 x Instruction Manuals