Optex AP2-20N Indoor Curtain Pir Detector

Product Description

The OPTEX AP2-20N is an indoor curtain passive infrared (PIR) motion detector designed for ceiling-mount installation in commercial and residential security applications. Curtain PIR detectors create a flat, narrow detection zone rather than a wide volumetric field, making them well-suited for doorways, windows, hallways, and perimeter entry points where targeted coverage is required. The AP2-20N detects heat signatures from moving individuals passing through the defined detection plane and signals an alarm or access-control panel upon activation. Licensed security installers and low-voltage technicians are the typical trade professionals who specify and install this type of sensor.

The AP2-20N is intended for indoor ceiling-mount deployments where a curtain-style detection zone is needed to monitor a specific corridor or entry point. Typical applications include retail storefronts, office entryways, stairwells, and interior doorframes where a full volumetric detector would generate unwanted coverage overlap. The ceiling-mount form factor allows the sensor to project the curtain zone downward across a defined passage, providing reliable presence detection without covering adjacent areas.

Key Features

• Curtain detection pattern provides a narrow, focused zone ideal for doorway and perimeter monitoring
• Ceiling-mount design allows downward projection of the detection curtain across passages
• Passive infrared sensing technology detects body-heat signatures of moving persons
• Indoor-rated construction suitable for climate-controlled commercial and residential environments
• Sold individually as a single unit for flexible deployment

Compatibility

Designed as an OEM-style ceiling-mount curtain PIR sensor compatible with standard security alarm and access-control panel inputs that accept passive infrared detector wiring.

Installation Notes

Installation should be performed by a licensed low-voltage or alarm technician in accordance with applicable local electrical codes and NFPA 72 guidelines. De-energize the security panel and associated wiring circuits before connecting or disconnecting sensor leads. Ceiling height and mounting angle will determine the width and floor-level coverage of the curtain zone, so consult the manufacturer documentation for recommended mounting parameters. Do not install in outdoor or high-humidity environments, as this unit is rated for indoor use only.