What type of device is a glass break detector?

A glass break detector is classified as an acoustic sensor because it operates by recognizing the sound frequency produced when glass shatters. These devices are designed to listen for specific sound patterns associated with breaking glass and can effectively trigger an alarm when such sounds are detected.

This technology typically utilizes a microphone or similar acoustic sensing element to differentiate between ordinary noises and the specific frequencies of breaking glass, thus providing a reliable means of security for areas where glass windows or doors are present.

While motion sensors detect movement, infrared sensors respond to heat changes, and magnetic sensors rely on the opening and closing of magnetic circuits, none of these functionalities directly relate to the primary operation of a glass break detector. Thus, the classification as an acoustic sensor is accurate, specifically targeting the sound aspect to enhance security measures against break-ins.