Part Numbers


HOBO Occupancy/Light (5m Range) Data Logger

5 Meter Sensor

Call for availability

Monitors room occupancy and indoor light changes to identify occupancy patterns and determine energy usage and potential savings; 5-meter range.

Important Information

Requires HOBOware software and a USB cable. (Note: A USB cable is included w/HOBOware Pro CD or USB software purchase). See compatible items below.

Compatible with


Product upgrade options


HOBO Occupancy/Light (12m Range) Data Logger

$270.00 USD
View product


Monitors room occupancy and indoor light changes to identify occupancy patterns and determine energy usage and potential savings. This logger is available in a standard 128 KB memory model (UX90-005) capable of 84,650 measurements and an expanded 512KB memory version (UX90-005M) capable of over 346,795 measurements.


  • 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
  • Compatible with HOBOware and HOBOware Pro software for logger setup and graphing & analysis
Country of Origin
United States


Occupancy Sensor

Detection Range
maximum 5 m
16.4 ft
Detection Performance
94° (±47°) Horizontal; 82° (±41°) Vertical (see Figure A)
Detection Zones
64 (see Figure A)

Light Sensor

Light Threshold
> 65 lux
Light Type
LED, CFL, fluorescent, HID, incandescent, natural


Memory Modes
Wrap when full or stop when full
Start Modes
Immediate, push button, date & time, or next interval
Stop Modes
When memory full, push button, or date & time
Time Accuracy
±1 minute per month at 25°C (77°F) (see Plot A)
Power Source
One 3V CR2032 lithium battery and USB cable
Battery Life
1 year typical use
UX90-005: 128 KB (84,650 measurements, maximum)
UX90-005M: 512 KB (346,795 measurements, maximum)
Download Type
USB 2.0 interface
Full Memory Download Time
10 seconds for 128 KB, 30 seconds for 512 KB
Operating Range
Occupancy Sensor Range: 20° to 60°C (-4° to 140°F); 15 to 85% RH (non-condensing)
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
3.66 x 8.48 x 2.36 cm
1.44 x 3.34 x 0.93 in.
30 g
1.06 oz
Environmental Rating
CE Compliance Mark

Compatible items

Compliance Certificates

$29.00 USD

Fiber Optic Attachment

$33.00 USD

Communication Cables

$17.00 USD


$13.00 USD

Graphing & Analysis

$75.00 USD
$99.00 USD

What's in the box

  • HOBO UX90-005x Occupancy/Light Data Logger
  • Command™ strip
  • Double-sided tape
  • Hook & loop strap


HOBO Occupancy/Light Data Logger (UX90-005, UX90-006x) User's Manual

View View

Quick Start for the HOBO® U-Series Data Logger

View View

Customers Also Bought

Data Logger

HOBO 4-Channel Analog Data Logger

A high-performance, LCD display data logger to measure and record temperature, current, CO2, voltage, and more, for building performance monitoring applications.
View product
Data Logger

HOBO Plug Load Data Logger

A high-accuracy, easy-to-deploy data logger that measures and records the power and energy consumption of 120V plug loads from office equipment, vending machines, and other devices.
View product
Data Logger

HOBO Light On/Off Data Logger

Monitors indoor light changes with an internal sensor and records light on/off conditions; ideal for building energy audits and light usage analysis.
View product

HOBO Light Pipe

A 1-foot attachment for HOBO UX90 Occupancy & Light data loggers to help eliminate the effects of ambient sunlight when monitoring room light usage.
View product