US Patrol instant alarm. Set of 4 door and window alarms. Magnetic sensor technology. 90 decibel alarm. Batteries included. (uses 3 AG13) Includes double sided mounting tape. Open the battery cover, pull out the paper tab, replace the cover, peel off self-adhesive, stick in place and turn it on. Easy do it yourself installation. No tools or wiring needed. Great for anything you want to protect. Use it for business on display cases, cash drawers etc.
3/4" thick 1-3/4" W 2-1/2" H