TandD TR72A

  • 1 Temperature channel: 0 to 55°C
  • 1 Humidity channel: 10 to 95% RH
  • External temperature/humidity sensor included
  • Accuracy: ±0.5°C and ±5% RH
  • Logging capacity: 8,000 data sets
  • Measurement resolution: 0.1°C and 1% RH
  • Built-in 802.11b/g/n and Bluetooth 4.2 (BLE) wireless interfaces
  • View data on mobile devices via Thermo App
  • WebStorage Service available



The TR72A WiFi & Bluetooth Temperature Humidity Data Logger

The TR72A allows you to measure and record temperature from 0 to 55°C and humidity from 10 to 95% RH.

The LCD screen allows the simultaneous display of either the current values of two channels, the highest and lowest values of channel 1, or the highest and lowest values of channel 2. The ALM icon on the LCD alerts the user of the occurrence of an alarm.

Use the wireless LAN feature to auto-upload data to the cloud for any time, anywhere access, and get warning notices. Connect to a PC with a USB cable to download recorded data and make setting changes.

It is perfect for not only homes and offices but for warehouse and storage facilities.

Special Features

The TR72A uses a wireless LAN access point to auto-upload recorded data and warning notifications to our free cloud-based “T&D WebStorage Service“. To make settings from and download data via USB to a PC, use our Windows software “TR7 for Windows”. Our Windows software “T&D Graph” makes it easy to view and analyze data from your PC.

The “T&D Thermo” mobile app that enables data viewing and settings from smartphones and tablets via Bluetooth communication will provide support for the TR72A in late 2021.



TR-71A TR-72A TR-72A-S
Sensor TR-0106 THA-3001 HHA-3151(High-Precision Type)
Thermistor Thermistor Polymer Resistance Platinum Resistance Electrostatic Capacitance
Measurement Channels Temperature 2ch Temperature 1ch Humidity 1ch Temperature 1ch Humidity 1ch
Measurement Units °C, °F °C, °F %RH °C, °F %RH
Measurement Range -40 to 110 °C (Supplied Sensor), -60 to 155 °C (Optional Sensor: Fluoropolymer Coated Type), -10 to 60°C (Internal Sensor)(*2) 0 to 55 °C 10 to 95 %RH -25 to 70 °C 0 to 99 %RH(*3) K -199 to 1370°C   E -1999 to 1000°C
J -199 to 1200°C    S -50 to 1760°C
T -199 to 400°C      R -50 to 1760°C
Accuracy Avg.±0.3 °C [-20 to 80 °C] Avg.±0.5 °C [-40 to -20 / 80 to 110 °C] ±0.5 °C ±5 %RH [at 25 °C, 50 %RH] ±0.3 °C [10 to 40 °C] ±0.5 °C [all other temperatures] ±2.5 %RH at 15 to 35 °C, 30-80% RH (*3) Does not include sensor inaccuracy
K,J,T,E : ±(0.5°C + 0.3% of reading)
S,R : ±(1.5°C + 0.3% of reading) @ 100°C or above
Cold Junction : ±0.5°C 10° to 40°C
±0.8°C -10° to 60°C
Measurement Resolution 0.1 °C 0.1 °C 1 %RH 0.1 °C 0.1 %RH K,J,T,E : 0.1°C
S,R : Approx.  0.2°C
Responsiveness Thermal Time Constant: Approx. 75 sec. Response Time (90%): Approx. 190 sec. Response Time (90%): Approx. 7 min. Response Time (90%): Approx. 7 min.
LCD Display Items Measurements (fixed or alternating display), Battery Warning Mark, etc.
Logging Capacity 8,000 data sets (One data set consists of readings for all channels in that type of unit.)
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) or One Time (Stop recording when capacity is full)
Auto-upload Interval Select from 15 choices: OFF (No auto-upload), 1, 2, 5, 10, 15, 20, 30 min. or 1, 2, 3, 4, 6, 12, 24 hrs.
Communication Interfaces Wireless LAN Communication • Standard: IEEE 802.11b/g/n • Security (*4) : WEP (64bit/128bit), WPA-PSK(TKIP), WPA2-PSK(AES) • WPS 2.0 : Push Button Configuration • Protocol: HTTP, DHCP, DNS Bluetooth Communication • Bluetooth 4.2 (Bluetooth low energy) USB Communication (*4) • USB 2.0 (Mini-B connector)
Power AA Alkaline Battery x 2 (AA Ni-MH batteries may also be used), USB Bus Power (5 V 200 mA), AC Adapter AD-05A2 or AD-05C2
Battery Life (*7) With wireless LAN communication: Approx. 10 days to 15 months Approx. 10 days to 1 year
Dimensions H 58mm x W 78mm x D 26mm
Weight Approx. 55g
Operating Environment Temperature: -10 to 60 °C,  Humidity: 90 %RH or less (no condensation)
Accessories Temperature Sensor (TR-0106) x 2 Temperature/Humidity Sensor (THA-3001) x 1 High Precision Temperature/Humidity Sensor SHA-3151
AA Alkaline Battery (LR6) x 2, Registration Code Label, USB Mini-B Cable US-15C, Manual Set (Warranty Included)
*1 : Compatible wire sizes: Single wire AWG 22-28, stranded Wire AWG 22-28, strip length .4 inch
*2 : When Auto Upload is used frequently the internal sensor temperature may increase by about 0.3°C
*3 : When used continually in environments above 60°C the accuracy of humidity measurements will decrease over time. Humidity cannot be measured below -20°C.
*4 :If you wish to use the WPS feature, please select WPA2-PSK(AES) or “None”.
*7 : Battery life varies depending upon the frequency of communication, Auto Upload interval, wireless LAN environment, ambient temperature, recording interval, 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.


WebStorage Service

Free Online Service for Cloud Data Storage

It’s never been so easy to share your recorded data via the Internet! T&D’s free WebStorage Service is perfect for processing and managing data recorded in remote places or for allowing several people to view the same recorded data at their convenience. Users can check the current conditions of data loggers such as battery level and radio signal strength between the Base Unit and Remote Unit. Recorded data can be transmitted to the WebStorage Service from any compatible Tamp;&D product. Data storage capacity is 20MB.

Additionally, the data transmitted to T&D WebStorage Service can be accessed via your browser from anywhere, anytime, as long as an internet connection is available. Mobile device apps are also available for devices running iOS and Android.

Compatible Products

Users can setup automatic data transmission from the following T&D products to the WebStorage Service:

  • TR-7wf Series
  • RTR-500 Series
  • RTR-601


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