Easy to install--just peel and stick.
Alarm is activated when the two pieces are separated.

* Technical Parameter:
- Power supply: 2*1. 5v(AAA battery)
- Quiescent current: 3~6uA
- Temperature: -10& ordm; C ~ +50& ordm; C
- Alarm decibel: 90dB
- Size: Main frame: 9.2*3*1.5cm
- Magnetic box: 4.8*1.3*1.2cm
- Packing size: 14.7*9.5*2.2cm
- Color: White
- N. W: 31.1g(Pre-packed)
- G.W: 41g

* Applicable scope: Ideal entry warning for homes, apartments, mobile homes, dorms, offices, hotel rooms, garages, and more!
1) Electronic Magnetic Sensor detects entry
2) Easily mounted to windows or doors with included mounting tape
3) Convenient on/off switch
4) Wireless unit has no cords

The product YL333 can be installed directly on doors and windows. It is of high sensitivity and can be used to protect people against stealing. It will give an alarm if someone opens the door or the window.

Price: FOB YIWU USD 0. 35/PIECE