Optex QXI-ST Wide Angle Outdoor Pir Detector

Product Description

The OPTEX QXI-ST is a wide-angle outdoor passive infrared (PIR) motion detector designed for perimeter and area detection in security and access-control applications. PIR detectors of this type sense changes in infrared energy caused by moving persons or objects within the detection zone, triggering an alert signal to the connected control panel or device. The QXI-ST is built for outdoor service, where it must contend with environmental variables such as temperature swings, wind, and solar interference that would cause false activations in an indoor-only unit. Security technicians and low-voltage alarm installers are the primary trades that specify and install this device.

The QXI-ST suits residential and light-commercial outdoor perimeter security installations. It is typically mounted at entryways, along building perimeters, driveway approaches, or near access points where a wide detection angle is needed to reduce the number of sensors required to cover a zone. Its outdoor-rated construction makes it appropriate for exposed mounting locations where weather resistance is a priority. No specific compatible control panels or system families were identified in the available product data.

Key Features

• Wide-angle PIR detection pattern for broad outdoor coverage
• Outdoor-rated construction suited for exposed mounting locations
• Passive infrared sensing technology reduces false activations from non-thermal sources
• Single-unit packaging (sold individually)

Compatibility

Designed as an OEM-style outdoor PIR detector for use with compatible low-voltage security and access-control systems. Verify panel input specifications and wiring requirements before installation.

Installation Notes

Installation should be performed by a licensed low-voltage or alarm systems technician in accordance with local codes and NEC Article 725 for limited-energy circuits. De-energize the control panel and any connected power supplies before making wiring connections. Mount the detector at the manufacturer-recommended height and angle to achieve the intended detection pattern and minimize false triggers from heat sources such as HVAC exhaust vents or direct sunlight. Avoid aiming the sensor toward areas with heavy vehicle or animal traffic unless the unit is specifically rated for pet or vehicle immunity.