Feature: 1. Door Window Open Alarm: Designed for easy installation on doors and windows. When the door or window is opened, it activates immediately, making a loud sound that lasts for 30 seconds. 2. Adjustable Volume: Choose from four volume levels, up to a maximum of 108dB. The adjustable sound makes the door sensor suitable for different settings and minimizes noise disruption in quieter spaces. 3. With Remote Control: You can easily adjust the settings of the door alarm sensor remotely, greatly enhancing the efficiency of setup and use. 4. Versatile Use: This door and window alarm is suitable for protecting sliding doors, pool gates, windows, and other entry points, making it suitable for both commercial and residential use. 5. Easy to Use: Powered by 2 AA batteries (included), easy to install and requires no wiring. Comes with double sided adhesive tape for secure attachment to door or window frames, no additional tools needed. Specification: Item Type: Door Sensor Alarm Material: ABS Remote Control Battery: 1x210mAh CR2023 Battery (Included) Alarm Battery: 2x1800mAh AA Batteries (Included). Package List: 1 x Door Sensor Alarm 1 x Reed 1 x Remote Control 1 x Screwdriver 3 x Double Sided Tape 1 x Cable Tie 1 x User Manual