HOBO 4-Channel Thermocouple Data Logger
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.
Overview
A four-channel thermocouple LCD data logger to measure and record temperature in a broad range of monitoring applications. Records temperatures from -260 to 1820⁰ C and accepts up to four J, K, T, E, R, S, B, or N type probes. This logger also features an internal temperature sensor for logging ambient temperatures, further extending the range of application possibilities.
Onset also offers a single-channel thermocouple data logger, the HOBO UX100-014M.
- Easy-to-view LCD display confirms logger operation and battery status
- Near real-time readout of current temperatures as well as minimum, maximum, average and standard deviation statistics
- On-screen alarms notify you if temperatures exceed high or low thresholds
- Large memory capacity capable of storing 1.6 million measurements
- Start, stop, and restart pushbuttons
- User upgradeable firmware
- Optional protective case enables logger use in outdoor environments
- Compatible with HOBOware and HOBOware Pro software for logger setup, graphing, and analysis
In what environment does this data logger operate?
This data logger operates in an indoor environment.
What measurements does this data logger support?
The UX120-014M data logger supports the following measurements: Temperature and Thermocouple
The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.
Thermocouple
Type | Range | Accuracy | Resolution |
J | -210° to 760°C (-346° to 1,400°F) | ±0.6°C (±1.08°F) ± thermocouple probe accuracy | 0.03°C (0.06°F) |
K | -260° to 1,370°C (-436° to 2,498°F) | ±0.7°C (±1.26°F) ± thermocouple probe accuracy | 0.04°C (0.07°F) |
T | -260° to 400°C (-436° to 752°F) | ±0.6°C (±1.08°F) ± thermocouple probe accuracy | 0.02°C (0.03°F) |
E | -260° to 950°C (-436° to 1,742°F) | ±0.6°C (±1.08°F) ± thermocouple probe accuracy | 0.03°C at (0.05°F) |
R | -50° to 1,550°C (-58° to 2,822°F) | ±2.2°C (±3.96°F) ± thermocouple probe accuracy | 0.08°C (0.15°F) |
S | -50° to 1,720°C (-58° to 3,128°F) | ±2.2°C (±3.96°F) ± thermocouple probe accuracy | 0.08°C (0.15°F) |
B | 550° to 1,820°C (1,022° to 3,308°F) | ±2.5°C (±4.5°F) ± thermocouple probe accuracy | 0.1°C (0.18F) |
N | -260° to 1,300°C (-436° to 2,372°F) | ±1.0°C (±1.8°F) ± thermocouple probe accuracy | 0.06°C (0.11°F) |
Internal 10K Thermistor (Temperature):
Range: Logging: -20° to 70°C (-4° to 158°F)
Acuracy: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), see Plot A
Resolution: 0.024°C at 25°C (0.04°F at 77°F); see Plot A
Drift: <0.1°C (0.18°F) per year
Logger
Logger Operating Range
Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing); logger accuracy from 0° to 50°C (32° to 122°F)
Launch/readout: 0° to 50°C (32° to 122°F) 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: Immediately, Push Button, Date & Time or Next Interval
Stop modes: When Memory Full, Push Button, or Date & Time
Restart mode: Push Button
Time accuracy: ±1 minute per month at 25°C (77°F), see Plot B
Battery life: 1 year, typical with logging rate of 1 minute and sampling interval of 15 seconds or greater
Battery type: Two AAA 1.5V alkaline batteries, user replaceable
Memory: 4 MB (1.6 million measurements, maximum)
Download type: USB 2.0 interface
Full memory download time: Approximately 1.5 minutes
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
Size: 10.8 x 5.41 x 2.54 cm (4.25 x 2.13 x 1 in.)
Weight: 107.5 g (3.79 oz)
Environmental rating: IP50
- The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)

- HOBO UX120-014M 4-Channel Thermocouple Data Logger
- Command™ strip
- Double-sided tape
- Hook & loop strap
- Two AAA 1.5 V alkaline batteries
The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.
Customers Also Bought
Onset's NEMA 4X weather-resistant enclosure for mounting the HOBO UX120-014M data logger in wet, dusty, or condensing environments. It is intended for short deployments where additional protection is needed.
The Type J 6 ft Beaded Thermocouple probe includes 1.8m (6') of insulated 30-AWG wire wound on an integrated spool caddy /subminiature connector. Color-coded for type J (black) thermocouples according to the ANSI standard.
The TCP6-K12 Type K thermocouple probe can measure up to 900°C (1650°F) when connect to the UX100 thermocouple logger. The TCP6-K12 stainless-steel probe is 30cm (12") in length, 0.5cm (3/16") in diameter and is mounted on a 2.5cm (1") handle with spring-type strain relief. The 1.8m (6 foot) 19-AWG cable meets ANSI specifications, complete with isolated thermocouple color-coded for type K (yellow) thermocouples.
A single-channel thermocouple data logger to measure and record temperature in indoor environments. Designed for a broad range of monitoring applications - from industrial process monitoring to concrete maturity testing - this logger provides exceptional flexibility by accepting J, K, T, E, R, S, B or N type thermocouple probes (sold separately).
Onset also offers a four-channel thermocouple data logger, the HOBO UX120-014M.
Recently Viewed

Detailed Specifications
HOBO 4-Channel Thermocouple Data Logger
Thermocouple
Type | Range | Accuracy | Resolution |
J | -210° to 760°C (-346° to 1,400°F) | ±0.6°C (±1.08°F) ± thermocouple probe accuracy | 0.03°C (0.06°F) |
K | -260° to 1,370°C (-436° to 2,498°F) | ±0.7°C (±1.26°F) ± thermocouple probe accuracy | 0.04°C (0.07°F) |
T | -260° to 400°C (-436° to 752°F) | ±0.6°C (±1.08°F) ± thermocouple probe accuracy | 0.02°C (0.03°F) |
E | -260° to 950°C (-436° to 1,742°F) | ±0.6°C (±1.08°F) ± thermocouple probe accuracy | 0.03°C at (0.05°F) |
R | -50° to 1,550°C (-58° to 2,822°F) | ±2.2°C (±3.96°F) ± thermocouple probe accuracy | 0.08°C (0.15°F) |
S | -50° to 1,720°C (-58° to 3,128°F) | ±2.2°C (±3.96°F) ± thermocouple probe accuracy | 0.08°C (0.15°F) |
B | 550° to 1,820°C (1,022° to 3,308°F) | ±2.5°C (±4.5°F) ± thermocouple probe accuracy | 0.1°C (0.18F) |
N | -260° to 1,300°C (-436° to 2,372°F) | ±1.0°C (±1.8°F) ± thermocouple probe accuracy | 0.06°C (0.11°F) |
Internal 10K Thermistor (Temperature):
Range: Logging: -20° to 70°C (-4° to 158°F)
Acuracy: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), see Plot A
Resolution: 0.024°C at 25°C (0.04°F at 77°F); see Plot A
Drift: <0.1°C (0.18°F) per year
Logger
Logger Operating Range
Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing); logger accuracy from 0° to 50°C (32° to 122°F)
Launch/readout: 0° to 50°C (32° to 122°F) 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: Immediately, Push Button, Date & Time or Next Interval
Stop modes: When Memory Full, Push Button, or Date & Time
Restart mode: Push Button
Time accuracy: ±1 minute per month at 25°C (77°F), see Plot B
Battery life: 1 year, typical with logging rate of 1 minute and sampling interval of 15 seconds or greater
Battery type: Two AAA 1.5V alkaline batteries, user replaceable
Memory: 4 MB (1.6 million measurements, maximum)
Download type: USB 2.0 interface
Full memory download time: Approximately 1.5 minutes
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
Size: 10.8 x 5.41 x 2.54 cm (4.25 x 2.13 x 1 in.)
Weight: 107.5 g (3.79 oz)
Environmental rating: IP50
- The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)