HOBO U12 Series Temperature Data Logger
Starting at $272.00

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  • Food-grade 316 Series Stainless Steel
  • Memory: 43,000 measurements
  • Temp range: -40 to 257°F (-40 to 125°C)
  • Suitable for high pressure applications to 2200 psi
  • 3 year battery life (factory replaceable)
  • Accuracy: ±0.45°F from 32° to 122°F
  • Response time to 90%:
    • U12-015: 10 min (air), 3.5 min (water)
    • U12-015-02: 2.25 min (air), 20s (water)
  • 5 inch external probe option

The HOBO U12 Series Temperature Data Logger are ideal for food, pharmaceutical, autoclave, and other applications where high-accuracy temperature data is critical. They can withstand process conditions from pasteurization to flash freezing and washdown.

With its broad temperature range -40 to 257°F (-40 to 125°C) and food-grade stainless steel housing, the U12 withstands process conditions from pasteurization to flash freezing and washdown. The U12 Stainless is also ideal for high-temperature or deep underwater applications.

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 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 TMC Air/Water/Soil Temp Sensors
Measures temperature in air, water, or soil, 1 ft, 6 ft, 20 ft and 50 ft lengths available
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 Veris Kilowatt Transducer Sensor
Three 100 amp split core current transformers, 480 Volts AC rms input voltage
HOBO ConLab AC Transmitter Sensors
Self-powered transformer for monitoring sine wave, single-phase AC voltage. 150 anf 300 volts RMS range options
HOBO U-DT-1 Shuttle Data Transporter
Reads out data from systems in the field for transfer to a host computer

Application Notes

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

Monitoring Meat Temperatures During Smoking

The Background: Our customer is a commercial smokehouse. They seek a means to datalog the temperature of meats during the smoking and curing process.

The Problem: As a commercial foodservice company, our customer is highly concerned with maintaining their high standards of quality and consistency. They do this by performing regular quality checks and by constantly monitoring process variables, especially temperature.

The Solution: We recommended the HOBO U12 temperature data logger which has a broad temperature range (-40 to 257°F) and food-grade stainless steel housing making it ideal for food applications where high-accuracy temperature data is critical. The U12 can withstand process conditions from pasteurization to flash freezing and washdown.