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    Qolsys IQ S-Line Encrypted Recessed Door/Window Sensor (QS1134840) — Specifications

    September 08, 2026 1 min read

    Overview of the Qolsys IQ S-Line Encrypted Recessed Door/Window Sensor (QS1134840) — a virtually undetectable, S-Line encrypted door/window sensor for Alarm.com-enabled automation and monitoring.

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

    Qolsys Encrypted Door/Window Sensor (-S) — virtually undetectable and outrageously secure. Boasts S-Line encryption for enhanced security beyond standard wireless sensors.

    Features

    • Very difficult for an intruder to breach
    • Boasts S-Line encryption, adding more security than ever before
    • Easy to install into a door frame
    • Using Alarm.com, get a text notification if a door is left open
    • Create automation rules such as "turn on light when door is opened" or "adjust thermostat if door left open"
    • Create custom names for each sensor, determine unique chime type, and choose voice prompts on or off
    • Get text notifications if doors are left open