USP Window Bug Glass Break Sensor

Millions of Window Bugs are protecting businesses and residences all over the world. In fact, a Window Bug is installed somewhere every 60 seconds.

What makes Window Bug such a popular glass break detector? Simple. It works and has worked for over 30 years.

Patented tuning fork technology enables Window Bug to sense the shock wave frequency of breaking glass and interrupt the alarm circuit. And it won't false alarm due to rapping on the outside of glass with a coin, keys, or with any sound that simulates breaking glass. In addition, Window Bug has a built-in tamper switch which makes it nearly impossible to defeat.

• Dry Circuit
• No Power Required
• Peel and Stick Mounting
• Protects up to 32 square feet
• Automatic Reset
• 1-1/4" Diameter x 1/2" Depth with 22" cord
• Broken Pulse Time: 10 Milliseconds
• HG Compliant – no mercury
• Factory default to Normally Open (can be adjusted to Normally Closed with select USP controllers)