What type of glass will traditional glass-break detectors typically fail to detect when broken?

Traditional glass-break detectors are designed to pick up the sound frequencies associated with breaking glass. However, each type of glass produces different acoustic signatures when broken, which can affect the detector's ability to recognize those sounds.

Wired glass, characterized by the presence of wire mesh embedded within the glass, is less likely to generate the frequencies that traditional glass-break detectors are tuned to detect. The wire provides structural reinforcement, meaning when the glass is broken, the wire can help contain the shards and may not produce the typical shatter sound associated with glass breakage. This acoustic signature failure is why traditional detectors may have difficulty detecting wired glass breakage.

In contrast, other types of glass such as tempered glass, double-glazed glass, and laminated glass have different breaking characteristics, often producing more distinct or recognizable sound frequencies that traditional detectors are designed to detect. Thus, while the detection capability can vary based on many factors, wired glass is a known challenge for traditional glass-break detection systems.