Door Windown Entry Alarm Home Security Alarm System Standalone Magnetic Sensors

Specifications: 1. Sensor Type: Alarm 2. Alarm Type: Sound 3. Material: Plastic 4. Color: White 5. Size: 2.5 x 1.3 x 0.8 Inch Features: Easily Mounted By Adhesive Tape To Window Or Door. Magnetic Sensor Switch Detects Entry Protecting Your Home Or Office Whether You Are In Or Out. Warning Door/Window Sticker Is Supplied Free In Package. Operating By 3 Pcs.1.5v Button Cell. Operating Instructions: 1.Use The Double-Side Adhesive Tape To Fix The Main Unit At The Side Of The Door/Window.Attach The Bar Magnet To Door Frame/Window Frame With The Arrow Aligning With The Refrence Line Of The Main Unit. 2.Test The Setup By Swithing The System's Switch To ''On'' Position Of The Main Unit And See Whether The Alarm Can Be Triggered By Opening The Door/Window. Package Includes: 1PC Magnetic Sensor