Product Details

The QX Infinity (QXI) Series is a family of high or low mount outdoor PIR and dual-tech sensors providing a 120° wide and 40ft detection area. The new Quad-Element technology provides highly reliable detection performance within a compact and sleek design, fit for any residential or commercial applications. It also features OPTEX’s sensing analytics, called the Super Multi-Dimensional Analysis (SMDA), to reduce any noise created by the environment.

Wireless battery-powered PIR model

  • 120° wide and 40ft detection area, with OPTEX's new Quad-Element technology providing highly reliable detection performance within a compact and sleek design.
  • Fit for any residential or commercial applications.
  • Selectable mounting height & pattern
  • Multiple level & pet alley pattern
  • anti-masking function (QXI-RDT)
  • Double conductive shielding (QXI-DT/RDT)

OPTEX National Defense Authorization Act Declaration


  • Approach
  • House
  • Garden
  • Driveway

Key Features

  • Wireless battery-powered PIR model
  • 120° wide detector with high & low mounting options
  • 40ft detection area with Quad-Element Technology
  • Multiple level & pet alley pattern


No, PIR sensors detect the temperature difference between the detection goal and the bottom inside the detector’s field of view both when the difference is positive or negative. During the day the flat temperature can reach 122-140 degrees Fahrenheit, whereas the human body maintains it at 98.7 degrees Fahrenheit. This 20-degree difference is more than enough to detect intruder’s presence.

The battery-operated models of the QXI (QXI-R, QXI-RDT) have back-boxes that are large enough to accommodate most transmitters. The maximum size of the transmitters should be: 90mm (length) x 50mm (width) x 30mm (depth). The backbox of the QXI have sticking mounting pads inside to secure the transmitter in place.

The QXI is in multi-level mode by default which accommodates mounting heights between 7 ft. – 9 ft. Low mount is for the pet alley function which can be achieved by removing the main unit from the backbox and gently flipping the mirror into the horizontal position. Be aware to not touch the mirror face, only the sides. The mounting height for the pet alley pattern is 2.6 ft – 3.9 ft. If the QXI is mounted higher than this and is in the pet alley pattern, that human detection may be compromised. Please note, anti-blocking feature is not available when the QXI is in pet alley mode.

Masking strips are supplied with the QXI in the box. You can mask individual sections of the detection area by placing the corresponding strip to the lens. The latches that hold the lens in place can be found at the top, bottom, left and right of the lens. The lens can be removed easily by unlocking each latch with your thumb or screwdriver and gently push the lens out. Please ensure that you place the masking strips on the inside of the lens, not on the outside.

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