HOBO Extended Memory Occupancy/Light (12m Range) Data Logger

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The HOBO Occupancy & Light data logger monitors room occupancy and indoor light changes to identify occupancy patterns and determine energy usage and potential savings. The HOBO UX90-006 Room Occupancy/Light Data Logger is available in a standard 128 KB memory model (UX90-006) capable of 84,650 measurements and an expanded 512KB memory version (UX90-006M) capable of over 346,795 measurements.

Manufactured by: Onset
Model: HOBO Extended Memory Occupancy/Light (12m Range) Data Logger

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Light on/off


Occupancy Sensor
Detection Range
UX90-005x maximum 5 m (15.4 ft);
UX90-006x maximum 12 m (39.4 ft)
Detection Performance
UX90-005x 94° (±47°) Horizontal; 82° (±41°) Vertical (see Figure A in manual)
UX90-006x 102° (±51°) Horizontal; 92° (±46°) Vertical (see Figure B in manual)
Detection Zones
UX90-005x 64 (see Figure A in manual)
UX90-006x 92 (see Figure B in manual)
Light Sensor
Light threshold > 65 lux
Light type LED, CFL, fluorescent, HID, incandescent, natural
Time accuracy ±1 minute per month at 25°C (77°F) (see Plot A in manual)
Battery life 1 year typical use
UX90-005/-006 128 KB (84,650 measurements, maximum)
UX90-005M/-006M 512 KB (346,795 measurements, maximum)
Download type USB 2.0 interface
Download time 10 seconds for 128 KB; 30 seconds for 512 KB
Logger Operating Range
Logging -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Launch/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); the LCD may react slowly or go blank in temperatures outside this range
UX90-005x 3.66 x 8.48 x 2.36 cm (1.44 x 3.34 x 0.93 in.)
UX90-006x 3.66 x 8.48 x 2.87 cm (1.44 x 3.34 x 1.13 in.)
Weight 30 g (1.06 oz)
Environmental rating IP50
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)