HOBO UX120-006 4-Channel Analog Data Logger

SKU: UX120-006

The HOBO UX120-006M Analog Data Logger is a high-performance, LCD display data logger for building performance monitoring applications.

As Onset’s highest-accuracy data logger, it provides twice the accuracy of previous models, a deployment-friendly LCD, and flexible support up to four external sensors for measuring temperature, current, CO2, voltage, and more.


  • Twice the accuracy over previous models with 16-bit resolution
  • Flexible support for a wide range of external sensors
  • LCD confirms logger operation and displays near real-time measurement data
  • Provides minimum, maximum, average and standard deviation logging options
  • On-screen alarms notify you when a sensor reading exceeds set thresholds
  • Stores 1.9 million measurements for longer deployments between offloads
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis
Measurement Range

4-20mA (w/CABLE-4-20MA) 0 to 20.1 mA
0 to 2.5 V (w/CABLE-2.5-STEREO)
0 to 5 V (w/CABLE-ADAP5)
0 to 10 V (w/ CABLE-ADAP10)
0 to 24 V (w/ CABLE-ADAP24)


4-20mA ±0.001 mA ±0.2% of reading (w/CABLE-4-20MA)
±0.1 mV ±0.1% of reading (w/CABLE-2.5-STEREO)
±0.2 mV ±0.3% of reading (w/CABLE-ADAP5)
±0.4 mV ±0.3% of reading (w/ CABLE-ADAP10)
±1.0 mV ±0.3% of reading(w/ CABLE-ADAP24)


0.3 µA 4-20mA (w/CABLE-4-20MA)
40 µV (w/CABLE-2.5-STEREO)
80 µV (w/CABLE-ADAP5)
160 µV (w/ CABLE-ADAP10)
384 µV (w/ CABLE-ADAP24)

Operating range logging

-20° to 70°C
0 to 95% RH (non-condensing)


0° to 50°C per USB specification

Logging rate

1 second to 18 hours, 12 minutes, 15 seconds

Logging modes

Normal, burst, or statistics

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

Battery life

1 year, typical with logging rate of 1 minute and sampling interval of 15 seconds or greater

Battery type

Two AAA 1.5 V alkaline batteries, user replaceable


4 MB (1.9 million measurements, maximum)

Download type

USB 2.0 interface


LCD is visible from 0° to 50°C; the LCD may react slowly or go blank in temperatures outside this range


10.8 x 5.41 x 2.54 cm


107.5 g

Environmental rating

IP 50

Supports following measurements

4-20mA, AC Current, AC Voltage, Air Velocity, Carbon Dioxide, Compressed Air Flow, DC Current, DC Voltage, Differential Pressure, Gauge Pressure, Kilowatts (kW), Temperature and Volatile Organic Comp

Onset HOBO UX120-006 Analog Data Logger Datasheet