Detects the opening of windows and doors. Loud alarm alerts you to the opening. Self-adhesive and easy to install.
Alarm Unit: Length 65 by Width 30 by Depth 22mm (2.5 by 1.25 by 1 inch).
Magnetic Bar: Length 55 by Width 12 by Depth 12mm (2.25 by 0.5 by 0.5 inch).