The Door and Window Magnetic Sensor Alarm is a home security device designed to help protect your family. Featuring a surface mount design, it is easy to install and space-saving. The high-sensitivity sensor promptly detects the opening and closing status of doors and windows. This alarm is suitable for use in homes, offices, shops, and other locations, offering reliable security protection. Features Color: White Material: ABS Size: 6.50 x 2.00 x 1.30 cm / 2.55 x 0.79 x 0.51 in Sensing distance: 15-20 mm / 20-25 mm Current: 0.5 A Signal Output: NC/NO/COM Voltage: 100 V Power: 10 W Fixing Method: Screw Mounting Connection Mode: Copper Terminal Helps ensure the safety of your loved ones and personal belongings Suitable for both DIY enthusiasts and professionals requiring reliable door and window status detection Provides accurate detection of door and window status Features a modern white design that blends with most home interiors Offers enhanced security and peace of mind Package List 4 x Door Magnetic Sensor Alarms