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    • Home  / Product Manuals & Documentation
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    Optex AP2-20N — Indoor Curtain PIR Detector Specifications

    September 08, 2026 2 min read

    Specifications for the Optex AP2-20N indoor curtain PIR motion detector.

    💾 Download Original PDF
    Full text manual (for reference)

    The Optex AP2-20N is a true curtain indoor PIR (passive infrared) detector combining stable, reliable performance with a compact, discreet design — ideal for protecting large storefront windows, hallways, storage units, small entryways, and a variety of other commercial and residential applications.

    Key Features

    • Fresnel lens design with modern, compact housing
    • Patented Double Conductive Shielding technology resists interference from foreign light sources, drastically reducing false alarms
    • Flexible wall or ceiling mounting, 8ft to 12ft mounting height
    • 20ft PIR detection range with high-density detection zones
    • Uniform sensitivity for stable performance

    Specifications

    Spec Value
    Detection Method Passive Infrared
    Coverage 20ft x 3.3ft (mounting height 12ft) / 6m x 1m (mounting height 3.6m)
    Mounting Wall and ceiling
    Mounting Height 8ft – 12ft (2.4m – 3.6m)
    Zone Width 3.3ft max at 12ft mounting height (1m max at 3.6m)
    Sensitivity 35.6°F at 2ft/s (2°C at 0.6m/s)
    Detectable Speed 1ft – 10ft/s (0.3m – 3m/s)
    LED Indicator Switchable ON/OFF
    Sensitivity Adjustment High/Low
    Alarm Output Approx. 2.5 sec, N.C., 28V DC, 200mA max
    Tamper Switch N.C., opens when cover is removed. N.C., 28V DC, 100mA max
    Warm-up Period Approx. 60 sec
    Power Input 9.5 – 16V DC
    Current Draw 12mA max
    Weight Approx. 1.75oz (50g)
    Operating Temperature -4°F to +122°F (-20°C to +50°C)
    Environmental Humidity 95% max
    RF Interference Immunity No alarm at 10V/m, 80MHz – 1GHz
    Application Environment Indoor

    Installation Parameters

    Installation Height (H) 8 ft 10 ft 12 ft
    Area Width (W) 2 ft 2.5 ft 3 ft
    Area Length (L) 20 ft 20 ft 20 ft
    Recommended Distance Adjacent to Wall/Ceiling 1.5 ft 2 ft 2.5 ft

    Manufactured by Optex America — 800.966.7839 — sales@optexamerica.com — www.optexamerica.com