Starting at $139.00

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  • Analog, thermocouple and pulse models available
  • Normal, burst, statistics modes
  • High accuracy data loggers
  • 4-Channel Analog Logger specs:
    • 1.9 million measurement memory
    • 1 second to 18 hours, user selectable logging rates
  • 4-Channel Thermocouple logger specs:
    • Measuring range depends on thermocouple (sold separately)
    • Accuracy ±0.21°C from 0° to 50°C
    • 1sec to 18hr, 12min, or 15sec sampling rates
  • 4-Channel Pulse Logger specs:
    • Memory; 520,000 or 4,000,000 measurements
    • 1 second to 18 hours sampling rates
    • Max pulse frequency 120 Hz
    • Mas state, event, runtime frequency 1 Hz

The HOBO UX120 Series Data Loggers include a variety of measurement and applications. The UX120 Series includes a 4-channel analog logger, 4-channel thermocouple logger and a pulse logger.

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

The UX120 Thermocouple Logger is a four-channel LCD data logger for measuring and recording temperature in a range of monitoring applications. The logger makes it easy and convenient to record temperatures over a broad range (-260 to 1820° C) and can accept up to four J, K, T, E, R, S, B, or N type probes. In addition to accepting four thermocouple probes, the logger features an internal temperature sensor for logging ambient temperatures, further extending the application possibilities.

The HOBO UX120 4-Channel Pulse data logger is a highly versatile, 4-channel energy data logger that combines the functionality of four separate energy loggers into one compact unit. It enables energy management professionals from energy auditors to building commissioners to easily track building energy consumption, equipment runtimes, and water and gas flow rates.

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

USB logger-to-PC communications cable, six feet long and coated in black plastic
In Stock


HOBO DC Voltage External Input Cable
Provide analog sensor inputs of 0 to 5, 10 or 24 VDC, 1.9 m (6.3 ft) long cable
In Stock
HOBO 4-20 mA Input Cable
For connecting a sensor with a 4-20mA output to a HOBO U12, UX120, or ZW series external-channel data logger
In Stock
HOBO Voltage Input Cable
External input cable with 13mm (0.5") tinned braided wire leads, 1.8 m (6 foot) long cable


HOBO HOBOware Pro Software
Plot or export data to spreadsheets, time saving tools to fast setup, readout and export, compatible with all HOBO data loggers
In Stock


HOBO TC6 Series Beaded Thermocouple Probes
6 feet in length, type J, K or T thermocouples,
HOBO TCP6-K12 Probe Thermocouple Sensor
12" (30cm) stainless steel probe, 3/16” (0.5cm) in diameter, 32 to 1650°F (0 to 900°C) measuring range
HOBO TMC6-HC Stainless Steel Temperature Probe
6 foot Stainless Steel Temperature Probe
HOBO TMC6-HE Temperature Sensor
Plated copper temperature sensor probe that can be mounted to a pipe or flat surface
HOBO CTV Series AC Current Sensors
Split-core AC Current Sensor, measures as low as 2 amps and as high as 600 amps
HOBO T-VER-971BP-200 Split-Core Bi-Polar DC Transducer
Measures up to 200 Amps of DC current in both flow directions, adjustable span range


Please consider these optional accessories.

HOBO CDI-5200 / CDI-5400 Compressed Air Flow Meters
Adds the ability for users to be able to measure compressed air flow (SCFM), fits 1 inch or 2 inch steel pipes
HOBO T-VER-E50B2 Power / Energy Meter
True RMS up to the 21st harmonic 60 Hz, One to three phase AC system
HOBO WNB-3D WattNode 3-Phase Series Transducers
Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations, pulse output, use with wide variety of CT's
HOBO Veris Kilowatt Transducer Sensor
Three 100 amp split core current transformers, 480 Volts AC rms input voltage
HOBO Veris Kilowatt Hour 1-Phase / 3-Phase Transducers
300 or 800 amp sensors, split-core installation eliminates the need to remove conductors, accurate electronic pulse output
In Stock
HOBO U-DT-1 Shuttle Data Transporter
Reads out data from systems in the field for transfer to a host computer
HOBO WattNode Branch Circuit Transducer Sensor
Measures up to 3 separate branch circuits simultaneously, accurate measurement of multiple single phase or each phase of 3-phase configurations
HOBO WattNode 1 / 2 / 3 Phase Wye kWh Transducer Sensor
Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations
HOBO CSV-A8 AC Current Switch Sensor
Measure run-time (time-of-use) of equipment when combined with compatible HOBO data logger
HOBO CASE-4X-2 Enclosure
NEMA 4X weather-resistant enclosure
In Stock


This product can be used in the following applications:

Application Notes

Here's how some of our customers used this product.

External Data Logger for Digital Anemometer

The Background: Our customer uses a Kanomax 6800 digital anemometer to conduct site analysis prior to the placement of wind turbines. He seeks a means of logging the parametric data he captures with the anaemometer.

The Problem: The 6800 series offers no data logging capabilities itself, but can provide an optional linear analog output for air speed, temperature and humidity. Unfortunately, Kanomax does not offer an accompanying data logger or recorder to capture the transmitted information.

The Solution: We suggested the Hobo UX120 Series analog input logger, a high-performance 4-channel analog logger with an LCD display. The deployment-friendly UX120 provides twice the accuracy of other models. This provides all the data necessary for our customer to conduct his analysis.

Low Cost 2 Channel Logger

The Background: Our customer is a manufacturer seeking a low-cost, easy-to-use datalogger for recording pressure readings at two locations along their production line in order to troubleshoot an issue.

The Problem: As this is a temporary installation to locate a problem, the customer is mainly concerned with cost, ease of use and quick installation.

The Solution: We recommended the HOBO UX120-006M due to flexibility of input type, low cost and ease of use. The customer was able to scale the inputs to read in pressure units and got the logger setup just a few minutes after they opened up the box.

Monitoring Multiple Parameters of a Well

The Background: Our customer, a services company, is troubleshooting problems with a well and needs to monitor fluid depth, ambient temperature and motor current in a pump house.

The Problem: The customer wants to monitor a pretty unique combination of parameters. Space is also a consideration as is portability as the customer will remove the components and reuse at other locations as the need arises.

The Solution: We specified the Hobo UX120-006M logger, a CTV-A current sensor, TMC20-HD temperature sensor, and the Keller Econoline pressure sensor. This will accurately log all the required parameters and provide the customer with the information necessary to troubleshoot the well components.

Part Number Price Available
Show Configuration
Base Price
Data Logger Type
4-Channel Analog
1.9 million
$139.00 7
Show Configuration
Base Price
Data Logger Type
4-Channel Thermocouple (+$136.00)
1.9 million
$275.00 7
Show Configuration
Base Price
Data Logger Type
4-Channel Pulse (+$76.00)
520,000 measurements
$215.00 4
Show Configuration
Base Price
Data Logger Type
4-Channel Pulse (+$76.00)
4,000,000 measurements (+$110.00)
$325.00 2

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