TandD TR75A

  • 2 Channel temperature measurement
  • Thermocouple Inputs (K, J, T, E, S, R) – Sensors not included
  • Measurement Range: -199°C to 1760°C
  • Accuracy: Type K, J, T, E: ±(0.5 °C + 0.3 % of reading)
  • Accuracy: Type S, R : ±(1.5 °C + 0.3 % of reading)
  • Logging capacity: 8,000 data sets
  • 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 TandD TR75A WiFi & Bluetooth Thermocouple Data Logger

The TR75A is a temperature logger with two thermocouple (K, J, T, E, S, R) sensor connections. It is capable of measuring temperatures ranging from -199 to 1760°C and can be used in very high temperatures such as in a plant furnace or in deep freezers where temperatures reach very low levels.

Functional buttons on the device allow you to make settings and start/stop recording. Use the wireless LAN feature to auto-upload data to the cloud for any time, anywhere access, and get warning notices. Bluetooth communication allows you to view data, create reports and make settings from a smartphone or tablet. Connect to a PC with a USB cable to download recorded data, create reports and make setting changes.

The software application used with the TR75A has a “Vaccine Mode”, which meets or exceeds CDC requirements for VFC, and is suitable for monitoring and recording vaccine temperatures. The TR75A is useful not only in pharmaceutical, medical research labs, and hospitals but also in factories and other facilities.

TR75A Operational Differences by Measurement Mode

Normal Mode Vaccine Mode
Max/Min Values Max/Min temperature since the start of measurement or reset Max/Min recorded value since the start of measurement or reset
Warning Judgment Time 30 sec to 60 min (9 selections)
A warning will be issued when a measurement exceeds the set threshold value or a sensor error occurs for longer than the set judgment time.
0 sec.
If a recorded value exceeds the set threshold value or if a sensor error occurs, a warning will be issued.
Warning Display [ALM] Icon Warning alarms for exceeding a set upper and lower limit and for sensor errors will both disappear when the warning condition is resolved. Warning alarms for exceeding a set upper and lower limit will not disappear even after a value returns to within the threshold range. Warning alarms for sensor errors will disappear upon return to normal.

Special Features

The TR75A uses a wireless LAN access point to auto-upload recorded data and warning notifications to our free cloud-based “T&D WebStorage Service” or your Windows PC running the “T&D Data Server” software. Use our mobile app “T&D Thermo” to check data from your smartphone or tablet and use Bluetooth communication to make settings, download recorded data, and create reports. 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.




  TR71A TR72A TR72A-S TR75A
Measurement Channels Temperature 2ch Temperature 1ch, Humidity 1ch Temperature 1 ch, Humidity 1ch Temperature 2ch
Sensor Thermistor Thermistor Polymer Resistance Thermistor Polymer Resistance Thermocouple:
Type K, J, T, E, S, R (*1)
Measurement Units °C, °F °C, °F %RH °C, °F %RH °C, °F
Measurement Range – Internal Sensor -10 to 60 °C (*2)
Measurement Range – External Sensor -40 to 110°C
(Supplied Sensor)
-60 to 155°C
(Optional Sensor: Fluoropolymer Coated Type)
0 to 55 °C 10 to 95 %RH -25 to 70 °C 0 to 99 %RH (*3) Type K: -199 to 1370 °C
Type J: -199 to 1200 °C
Type T: -199 to 400 °C
Type E: -199 to 1000 °C
Type S: -50 to 1760 °C
Type R: -50 to 1760 °C
Accuracy (Supplied Sensor)
Avg. ± 0.3°C
at -20 to 80°C
Avg. ± 0.5°C
at -40 to -20°C, 80 to 110°C
±0.5°C ±5 %RH
at 25°C, 50 %RH
at 10 to 40 °C
all other temperatures
±2.5 %RH
at 15 to 35 °C,
30 to 80 %RH
Thermocouple Measurement
(Sensor inaccuracies not included)
Type K, J, T, E :
±(0.5 °C + 0.3 % of reading)
at -100°C or above
Type S, R :
±(1.5 °C + 0.3 % of reading)
at 100°C or above
Cold Junction Compensation
at 10 to 40 °C
other temperatures within the operating environment of the logger
Measurement Resolution 0.1 °C 0.1 °C 1 %RH 0.1 °C 0.1 %RH Type K, J, T, E: 0.1°C Type S, R: Approx. 0.2°C
Responsiveness (Supplied Sensor) Response Time (90%): Approx. 190 sec. Response Time (90%):
Approx. 7 min.
Response Time (90%):
Approx. 7 min.
Logging Capacity 30,000 data sets (One data set consists of readings for all channels.)
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)
LCD Display Items Measurements, Battery Warning Mark, etc.
– Measurements: Ch1 & Ch2 current values / Ch1 Max & Min values / Ch2 Max & Min values
– Display Pattern: Alternating or Fixed display
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 :
IEEE 802.11b/g/n (2.4GHz only)
WPS 2.0: Push Button Configuration
Protocol (*4): HTTP, HTTPS, DHCP, DNS
Bluetooth Communication: Bluetooth 4.2 (Bluetooth low energy)
USB Communication: USB 2.0 (Mini-B connector)
Power (*5) Battery: AA Alkaline LR6 x 2, AA Ni-MH x 2
External: USB Bus 5V 200mA, AC Adaptor AD-05A2 or AD-05C2
Battery Life (*6) Approx. 10 days (Auto-upload interval 1 min, Rec interval ≥10 sec)
Approx. 1 year (Auto-upload interval 1 hr, Rec interval ≥10 sec)
Approx. 15 months (Auto-upload interval ≥12 hr, Rec interval ≥10 sec)
*1.2 times longer with Bluetooth OFF
*Approx. 1.5 yrs with Bluetooth & Auto-Upload OFF
Dimensions H 58 mm x W 78 mm x D 26 mm
Weight Approx. 55 g
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 x 1
(Sensor not provided)
  AA Alkaline Battery LR6 x 2, Registration Code Label, USB Mini-B Cable US-15C, Manual Set (Warranty Included)


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 set up automatic data transmission from the following T&D products to the WebStorage Service: