OS-551DT

Low Voltage Dual-Tech Occupancy Sensor

The OS‑551DT is an advanced dual technology occupancy sensor that combines passive infrared and high frequency doppler (HFD) technology into one housing.

By intergrating two different sensing technologies with intelligent MCU firmware control logic, the OS‑551DT delivers many advanced features and second-to-none occupancy sensing capabilities.

 

  • 22‑26 VAC/DC low voltage power operation
  • Combined PIR and HFD sensors in one
  • Programmable ON and OFF delays
  • SmartDelay automatic setting technology
  • Disabled audible Delay End Warning
  • Walk through mode for passage occupancy
  • ECG output for 0‑10V dimmer control
  • Programmable LUX level threshold setting
  • Manual override signal input terminal
  • Multi-directional mounting bracket included
Product Information
OS-551DT Datasheet
OS-551DT Installation Instruction

  • 22‑26 VAC/DC low voltage power operation
  • Combined PIR and HFD sensors in one
  • Programmable ON and OFF delays
  • SmartDelay automatic setting technology
  • Disabled audible Delay End Warning
  • Walk through mode for passage occupancy
  • ECG output for 0‑10V dimmer control
  • Programmable LUX level threshold setting
  • Manual override signal input terminal
  • Multi-directional mounting bracket included

Product Information
OS-551DT Datasheet
OS-551DT Installation Instruction

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