Just hang this item on the inside door knob/window, open the switch, the piercing alarm will scare off any unwanted intruders, leaving you and your home well protected.

Features:
* Mini shape.
* Requires no special wire.
* 120 db supper loud alarm ringing.
* Powered by a 9V battery (excluded).
* With a strap, easy for carrying and hanging.
* Easy installation.
* Perfect to protect  your homes, stores, and any other places requiring protection from any unwanted intruders.

Specifications:
* Color: Black
* Housing: Plastics
* Alarm volumn: 120 db
* Power: 1*9V battery
* Dimensions: 100*55*28mm
* Net weight: 63g

Package including:
1*Wireless Touch-Sensitive Door Knob/Window Theft-Against Alarm

Package dimensions: 145*78*25mm
Package weight: 75g