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IR-TEC sensors are ideal for areas such as parking facilities, gas stations, pedestrian pathways and warehouses. A choice of lenses ensures complete coverage for mounting heights up to 50’.


  • Omni-directional quad element infrared sensor
  • Digital data control ambient light sensor built-in
  • 2-way IR remote programmable sensor setting
  • Hybrid switching for controlling loads with HIC
  • SmartDIM or multi-level high/low dim control
  • Remote programmable SmartDIM level setting
  • Up to 30 ft of remote programmable range
  • Beeping or light flashing acknowledgement
  • Available with a variety of mounting options
  • Available with interchangeable lens options


  • The LRD type of the TRANS‑PIR sensor family are two‑way IR remote programmable line voltage switching occupancy sensors with 0‑10V output for dimmable ballast or LED driver control.
  • The sensor is capable of providing top‑notch energy efficient lighting control in multiple modes with fully programmable multi‑level high/low dim or SmartDIM continuous dimming control.
  • SmartDIM is a state-of-the-art automatic dimming control technology developed by IR-TEC, which is capable of maintaining the overall ambient light level within the preset range through a smooth, flawless continuous dimming control to the connected lighting.
  • Specific control mode and sensor setting can be configured via the SRP-280 remote sensor programmer (optional).
  • The LRD-509 series is available with various mounting options and interchangeable lenses.
  • The sensor is designed to operate in the coldest of environments, down to -40°F/°C.


Passive Infrared (PIR) Occupancy Sensor. SmartDIM dimming control. IR remote control available for sensor configuration.


cULus Listed, CE Mark, Title 20/24 compliant.


LDR-509 Series Spec Sheet SRP-280 Sensor Remote User Manual