StowAway TidbiT Temperature Data Logger - TBI32-20+50

-20 to 50°C Temperature (1,000 ft.)

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IMPORTANT: This HOBO data logger requires HOBOware software and a communications device. See compatible items below.

Record underwater temperatures from -20°C to +50°C (-4°F to 122°F) with this miniature data logger. The StowAway TidbiT is completely sealed for underwater use; waterproof to 333m (1000ft). Enjoy quick launches and accessible readouts, due to its optic communications. This model records up to 32K. StowAway TidbiT units should not be used in wet environments with more than 90% relative humidity or in water with temperatures higher than +30°C for more than eight weeks cumulatively.

  • Waterproof to 1000 feet
  • Completely sealed in epoxy; very durable
  • User-selectable sampling interval: 0.5 seconds to 9 hours, recording times up to several years
  • Blinking LED light shows if temperature goes out of user-determined limits
  • Precision components eliminate the need for user calibration
  • Programmable start time/date
  • Triggered start with coupler or magnet
  • Memory modes stop when full or wrap-around when full
  • Nonvolatile EEPROM memory retains data even if battery fails
  • Multiple sampling with minimum, maximum or averaging
  • Blinking LED light confirms operation
  • Time accuracy: ±1 minute per week at +68°F (+20°C)
  • Mounting tab
  • Compliance certificate available
  • NIST-traceable temperature accuracy certification available
  • 5 year non-replaceable battery (typical use :16 three-month deployments in water (+35°F to +80°F) with 4 minute or longer intervals (no multiple sampling), 1 offload per deployment.)

The TBI32-20+50 Data Logger is for use in Underwater environments

The TBI32-20+50 Data Logger supports the following measurements:


Download HOBOware
software for free

This item is discontinued.

Time Accuracy Time accuracy: approx. ±1 minute per week,
full dependance shown in Plot A

Depth: Rated to 1000 feet

-20° to 70°C (-4° to 158°F) in air;
-20° to 30°C (-4° to 86°F) in water

Accuracy: ±0.4° at 20°C (±0.8° at 70°F)

Resolution: 0.3° at 20°C (0.6° at 70°F)

Sample Rate: 0,5 sec to 9 hours

Capacity: 32,520 measurements

Operating temperature range: -20° to 50°C

Battery line typical use: 5 years

Size: 3.0 x 4.1 x 1.6 cm (1.2 x 1.6 x 0.63 in.); mounting bail 4.6 mm (3/16 in.) diameter

Weight: 19.5 grams (0.68 oz.)

†Specified range is narrower than nominal range due to precision calibration process. Using TidbiT Temp loggers in wet environments (>90% RH) over 86°F (30°C) for extended periods of more than 8 weeks cumulative may lead to premature failure. For applications over 30°C use the HOBO® Water Temp Pro v2.

Part Number
BoxCar® Pro 4.3 Starter Kit
This product has been retired and has limited support.
Documentation for the TBI32-20+50


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.