UX90-005M Room Occupancy and Light Data Logger


  • Measures room occupancy up to 5 meters away
  • Auto-calibration of ON and OFF thresholds ensures reliable readings
  • LCD screen displays signal strength, enabling proper logger placement
  • Highly recommended light pipe accessory eliminates effects of ambient light to ensure the most accurate readings
  • 512 KB Memory
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis
  • USB Cable Required

Additional Equipment Required

SKU: UX90-005M Categories: , ,


The Onset HOBO® Occupancy/Light data logger monitors room occupancy up to 5 or 12 meters away (depending on the model) as well as indoor light changes with its integrated sensors. Using HOBOware®, you can easily configure both channels to record occupancy and light on and off conditions for building energy audits.

This compact data logger has a built-in LCD screen for checking status, remaining battery level, and memory consumption. You can also use the LCD screen to quickly calibrate the logger to the light level in the room or select preset sensitivity thresholds with HOBOware. The UX90-005M/-006M has a memory capacity of  512 KB.

Requires HOBOware software and USB Cable.


Detection Range maximum 5 m (16.4 ft);
Detection Performance 94° (±47°) Horizontal; 82° (±41°) Vertical
Detection Zones 64
Light threshold 65 lux
Lighty type LED, CFL, fluorescent, HID, incandescent, natural
Time accuracy ±1 minute per month at 25°C (77°F)
Battery life 1 year
Memory 512 KB
Download type USB 2.0 interface
Download time 30 seconds
Operating range (logging) -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Operating range (lauch/readout) 0° to 50°C (32° to 122°F) per USB specification
Occupancy sensor range 20° to 60°C (-4° to 140°F); 15 to 85% RH (non-condensing)
LCD LCD is visible from: 0° to 50°C (32° to 122°F)
Size 1.44 x 3.34 x 0.93 in.
Weight 30 g (1.06 oz)
Environmental rating IP50


Onset® HOBOware software supports all HOBO® data loggers and is available free for download.

Standard Features

  • Simple menus for fast, easy logger setup and readout
  • Point & click for fast setup and readout
  • Scaling to real-world engineering units
  • Presentation-quality graphs
  • Easy export of data files to text or Excel format
  • Free download

Easy Setup

Logger setup and readout is fast and easy with simple, intuitive windows.

Powerful Tools

Graphing and analysis tools allow you to plot, analyze and extract key data with just a few simple clicks.


Presentation Quality Graphs

Easily create high-quality visual presentations of your data.

HOBOware Pro Software

In addition to the free standard HOBOware software, a Pro version is available for purchase. HOBOware Pro features include:

  • Time-saving tools for fast setup & readout
  • Advanced plotting tools for more precise data analysis
  • Access to Data Assistants for post-processing data
  • Ability to create Pie Charts
  • Crop a series to a specific time frame
  • Subset Statistics Tool for details within a time frame
  • 21 CFR Part 11 Compliance
  • Data Shuttle support
  • HOBOnode Manager to support ZW Data Nodes