TR32B Bluetooth Temp/RH log-EZ

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T and D's Simplest Bluetooth Temperature and Humidity Logger

The TR32B is very simple to use; just insert a battery and place it where you want to measure and record temperature and humidity.

Its round design form with the sensor internalized is a departure from the "technical device" look and brings a comfortable familiar feeling that fits in with your decor.
It runs on a single AA alkaline battery for about one year when using a recording interval of more than 10 seconds and collecting data once a day.

The Bluetooth feature of TR32B allows easy setup and data collection using the "T&D Thermo" application running on your mobile device.

The data retrieved by the mobile device can be viewed in a graph, saved, and uploaded to the cloud-based "T&D WebStorage Service" for anytime anywhere access.



Measurement Channels

Temperature 1ch

Humidity 1ch



Polymer Resistance

Measurement Units

° C, ° F


Measurement Range

0 to 50 ° C

10 to 90 %RH


± 0.5 ° C

± 5 %RH at 25 , 50 %RH

Measurement Resolution

0.1 ° C

1 %RH


Response Time (90%): Approx. 21 min.

Logging Capacity

8,000 data sets (One data set consists of readings for temperature and humidity.)

Recording Interval

Select from 15 choices: 1, 2, 5, 10, 15, 20, 30 sec. or 1, 2, 5, 10, 15, 20, 30, 60 min.

Recording Mode

Endless: Overwrite oldest data when capacity is full

LCD Display Items

Measurements (alternating display), Battery Life Warning, etc.

Communication Interfaces

Bluetooth 4.2 (Bluetooth Low Energy)

Communication Time

Data Download Time (full logger): Approx. 15 seconds


AA Alkaline Battery LR6 x 1

Battery Life (*1)

Approx. 1 year (*2)


H 36 mm x W 85 mm x D 36 mm


Approx. 40 g

Operating Environment

Temperature:  0 to 50°C    Humidity: 90%RH or less (no condensation)


AA Alkaline Battery LR6, Registration Code Label, Stand, Screw x 2, User's Manual Set (Warranty Included)


Software (*3)

Mobile Application (iOS, Android) T&D Thermo

PC Software (Windows) T&D Graph

*1: Battery life varies depending upon multiple factors including ambient temperature, recording interval, frequency of communication, and battery performance. All estimates are based on operations carried out with a new battery and are in no way a guarantee of actual battery life.

*2: Estimated battery life when recording data at an interval of more than 10 seconds and collecting data once a day.