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  • Durable logger for measuring water temperature
  • Temp range: -4 to 158°F (20 to 70°C)
  • Accuracy: ±0.38°F over 32 to 122°F (±0.21°C over 0 to 50°C)
  • Resolution: 0.02°C at 25°C (0.04°F at 77°F)
  • Compact size 1.2 x 1.6 x 0.68 in (3.0 x 4.1 x 1.7 cm)
  • 42,000 measurements
  • Waterproof to 300 meters (1,000 feet)

The HOBO TidbiT v2 Temperature Data Logger has 12-bit resolution and a precision sensor for ±0.2°C accuracy over a wide temperature range. It is waterproof to 300 meters (1,000 feet) and can be used in a wide range of water temperature monitoring 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.

HOBO U-DTW-1 Waterproof Shuttle Data Transporter
Compatible with all HOBO U-Series loggers with optic USB, waterproof up to 20m (66ft), requires HOBOware Pro software
HOBO BASE-U-4 Optic USB Base Station
Used to offload data from any HOBO data logger with an Optic USB interface, splash resistant
In Stock


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


This product can be used in the following applications:

Application Notes

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

Measuring the Environmental Temperature Around Cows

The Background: Our customer is a local farm that wants to measure the temperature experienced by their cows throughout the day to make sure the cows are not experiencing temperatures that are too high since temperature extremes can stress the animals resulting in lower milk production.

The Problem: The customer wants something that can be attached to the collar of cow so it must be able to hold up to whatever conditions the cow encounters.

The Solution: We recommended the HOBO TidbiT v2 temperature data logger. Its compact size (just 1.2 x 1.6 x 0.68 inches), large memory and waterproof rating make it ideal for this application.