Features: Ensures your home’s security with the wireless door and window alarm sensors, featuring a 130db loud alarm that activates when door or window are opened, providing peacing of mind for families with children and pet. This sensors boasts a wireless, magnetic design for easy installation without the need for wiring or screws, allowing flexible placement on any door, window, or drawer. Ideal for families, this device help protect children and pet from wandering off unnoticed while also safeguarding valuable belongings. Perfect for various setting such as homes, offices, apartments, and garages, this versatile alarm system to suit different security needs. With its low power consumption and long lasting battery lifes, the alarm ensures continuous protective without frequent battery changes, making it a reliable choice for enhancing home security. Specifications: Component:ABS Size: Approx.65x34x16.5mm/2.55x1.33x0.64inch Size: Approx.36x10x14mm/1.41x0.39x0.55inch Color:White Package Includes: 1 Set Window Door Alarm Sensors note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.