Features:
1. All of our items are brand new
2. No need to link with the alarm host， Independent use
3. Easy installation， no wiring required
4. 105 db instant alarm
5. Low power standby consumption
6. Easily mounted by double-sided adhesive
7. Manual switch. In the state of "ON"， the sensor will emit the alarm signal as long as someone opens your door or window farther than 0.8cm around
8. Applied to office building， home， shop， factory and other places
9. Magnetic Sensor size: 54x35x20mm
10. Magnetic Stick size: 51x10x8mm
11. Power supply: 3 x 1.5V LR44 button cells (included)

Pocket includes:
l 1 x Magnetic Sensor
l 1 x Magnetic Stick