Product Details

The BX Shield (BXS) series is a range of quad PIR sensors that are ideal for protecting windows and the immediate boundaries of a building or site. Combining great usability and versatile design, the BX Shield series includes four PIRs, two on each side of the unit. Detection range and sensitivity can be adjusted independently on each side of the sensor, up to 80ft total (40ft per side), for high-performing flexibility. Equipped with SMDA logic (Super Multidimensional Analysis), the BX Shield drastically improves immunity against changes in temperature or moving trees and vegetation, effectively distinguishing between the cause of nuisance false alarms and genuine intrusions. The BXS also excels in environments where the temperature difference between the human body and the background is very small, due to its extreme high detection mode increasing the PIR sensitivity, preventing any missed alarms.

Standard Wireless-Ready Model

  • Four PIR technology, two on each side
  • Completely independent detection setting per side
  • Scope of detection area up to 40ft on each side, 80ft total (12m/24m)
  • SMDA Logic: Differentiates nuisance false alarms & genuine intrusions
  • Size analysis function ignores sources of false alarms
  • Extreme high detection mode
  • Tamper output activates when face cover/back box is removed
  • Versatile design
  • Automatic walk test mode

OPTEX National Defense Authorization Act Declaration


  • Buildings
  • Perimeter
  • Approach
  • House

Key Features

  • Four PIR technology, two on each side
  • Standard wireless-ready model
  • Completely independent detection setting per side
  • Scope of detection area up to 40ft on each side, 80ft total (12m/24m)


Adding our outdoor PIRs onto a wireless intrusion alarm system is simple. Our battery-operated sensors have enough space to accommodate most universal transmitters. As our sensors are very low current, the transmitter and sensor can be powered by the same batteries. A video was created to show you how to install the wireless transmitter. Watch our video tutorial.

The installation height is 2.6 ft to 3.9 ft. This is applicable to all of the BX series units. In order to get the best result, install the detector from 0.30 to 3.2 ft. high.

Yes, it can be adjusted by modifying each lens’ position.

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