Features:Brand new and high quality. Requires no special wire. Just hang on the inside door knob, open the switch, the piercing alarm will scare off any unwanted intruders, leaving you and your home well protected. 120 db supper loud alarm ringing. Size: 99mm x 55mm x 27mm. Powered by a 9V battery(NOT Included). Color: Black.
Package Included:1 x Touch Door Knob Entry Alarm Alert Security P001793