Buy 4 Free Shipping—Home Door Window Entry Burglar Alarm Signal Security alarm Switch Guardian

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.1.5VLR44 button cell.（without button cell）

Package includes: 1 x Magnetic Sensor (without button cell)

• 100% Brand New and High Quality
• Magnetic sensor switch detects entry

• Ideal guardian against the unwanted intruder whether you are in or out, keep yourself and your property safe and  secure.

• Easily attach the main sensor on the door/window and attach the stick adjacent to the main sensor on the door/window frame with the adhesive tape (included).

• Handy ON/OFF switch: in the state of "ON", the sensor will emit the alarm signal as long as someone opens your door or window
• Super loud 90 dB alarm
• Powered by 3*1.5V LR44 button cell(without button cell)
• siren Loudness:90db
• Size: 2.5 x 1.3 x 0.8 inch

OUR GUARANTEE 

We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 30 day guarantee. 
If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase.