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Optex Wireless 40' x 40' Wall Mount PIR Motion Detector for 2GIG


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Indoor Motion Detector For 2GIG Wireless Systems

Monitor an indoor area for motion through your 2GIG alarm panel using the Optex Wireless 40'x40' Wall Mount PIR Motion Detector. This battery-operated sensor detects motion up to 40 feet away within a wide 85-degree field of view. It features Quad Zone Logic, which means it provides high vertical density detection zones (two or three times the size of other conventional PIRs) to accurately distinguish between humans and other sources of infrared heat such as movement of blinds, curtains, or animals under 16 inches in height.

  • Compatible with 2GIG wireless alarm panels
  • Up to 40 feet of detection coverage with 85-degree field of view
  • Quad Zone Logic helps minimize false alarms
  • Battery powered; no wiring required
  • Up to 7 years of battery life
  • LED on/off switch

The Optex Wireless 40'x40' Wall Mount PIR Motion Detector also includes the following technical features:

Spherical Lens: Obtains an accurate focal length for each detection zone and maximizes the performance of Quad Zone Logic.

Temperature Compensation: Controls sensitivity to improve stability against changes in environmental conditions.

Sealed Optics: Prevents insects from crossing in front of the pyroelectric element and protects against drafts through wiring holes.

Installation Details

The Optex Wireless 40'x40' Wall Mount PIR Motion Detector should be mounted vertically on a flat surface 5 to 8 feet above the ground. Remove the cover then mount the unit, install the battery, and enroll the transmitter to your security system. Then replace the cover and conduct a walk test to ensure it works.

Optional Accessories for Installation

Optex Long Range Lens (part# FL-60N, sold separately)

  • Changes the detection range from 40 x 40 feet to 60 x 6 feet.

Optex Wall & Ceiling Mount Bracket (part# FA-3, sold separately)

  • Wall/ceiling mount bracket that provides multi-angle installation (±45° horizontally, 0 to 15° vertically downwards).


  • Optex 40'x40' PIR Motion Detector
  • CR123A Lithium Battery
  • User Manual


  • Requires connection to a wireless 2GIG alarm panel.
  • Avoid installation in:
    • Direct sunlight
    • Areas facing air conditioners or heating vents
    • Areas where vapor or humidity can cause condensation
    • Areas where curtains or screens block detection range
    • The outdoors
    • Unstable locations where vibrations or shock my affect the detector
    • Areas where detector's field of view is obscured, even if partially obscured

Optex – The Quality Products People Expect

Optex, Inc. markets products manufactured by Optex Company Limited. The company specializes in passive and active infrared technology, control systems, and CCTV products. Since its founding in 1979, Optex has established a worldwide reputation for quality, innovation, and technical excellence. Its products always represent an investment in performance and long-term satisfaction.


  • Manufacturer Part #: WNX-402G
  • Compatibility: 2GIG Wireless Systems
  • Detection Method: Passive infrared
  • Detection Coverage: 40 x 40 feet (12 x 12 meters), 85° angle of view
  • Detection Zones: 78 Zones
  • Sensitivity: 3°F (1.6°C) at 2ft / sec (0.6m/sec)
  • Detectable Speed: 1 – 5ft/sec (0.3 – 1.5m/sec)
  • Led Indicator: Switch-able ON/OFF
  • Tamper Switch: Form C (micro switch)
  • Pulse Count: Approx. 20 sec 2 or 4
  • Dimensions: 4.72 x 1.57 inches (120 x 40 mm)
  • Battery (CR123A Lithium):
    • 3 years (720 events per day)
    • 7 years (240 events per day)
  • Operating Temperature: -4°F to +122°F (-20°C to +50°C)
  • Environmental Temperature: 85% Max
  • Certifications: FCC, IC