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    Qolsys IQ S-Line Encrypted Glass Break Sensor (QS1431840) — Specifications

    September 08, 2026 1 min read

    Overview of the Qolsys IQ S-Line Encrypted Glass Break Sensor (QS1431840, 'Glass-S') — detects the pitch and frequency of breaking glass with encrypted signal transmission to the IQ Panel.

    💾 Download Original PDF 🛒 View Product
    Full text manual (for reference)

    Qolsys Glass-S — Encrypted Glass Break Detector. Actively listens for the specific pitch and frequency of breaking glass while the system is armed in "stay" or "away" modes, protecting windows within line of sight.

    Features

    • Encrypted sensor technology protects signals sent to the IQ Panel
    • Backwards compatible for legacy 319.5 MHz systems
    • Detects the pitch and frequency of breaking glass
    • Actively listening for breaking glass frequencies when the system is in "stay" or "away" modes
    • Typically installed on the wall opposite the windows needing protection, or on the ceiling in a room with windows on multiple sides
    • Protects windows within line of sight within 25 feet