"Response" Window Vibration Alarm. 

• Battery operated mini alarm, easily installed on doors, windows, drawers, cupboards, filing cabinets etc….
• Neat & Compact design.
• Loud sounder announces unwelcome visitors.
• Supplied complete with batteries.
• Easy to install, no tools required.

Brand new, unused except for my test. No packaging or instructions though.7cm by 3cm, thickness 1.5cm

Location: G