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testo 174 T BT - Mini temperature data logger with Bluetooth® and app connection

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The testo 174 T BT is a compact Bluetooth temperature data logger designed for continuous temperature monitoring and simple data access via the testo Smart App. It helps users document cold chain conditions during storage and transport, monitor temperatures in rooms, warehouses, or refrigerators, and protect temperature-sensitive products such as food, pharmaceuticals, and laboratory samples. Its wireless operation makes checking and analysing temperature data quick and convenient. 
Also available in black.
  • Monitor temperature continuously to protect goods, samples and controlled environments.  
  • Use Bluetooth and the testo Smart App for quick setup, wireless readout and easy data export.  
  • Accurate indoor temperature measurement from -30 °C to +70 °C.
  • Compact and easy to deploy with a clear display for instant on-site temperature checks. 

Check Temperature Data Faster Without Moving the Logger

The testo 174 T BT is a compact Bluetooth temperature data logger that records readings automatically and enables wireless access via a mobile app. Ideal for storage, transport and indoor environments, it helps protect temperature-sensitive goods while saving time on routine checks.

Wireless Readout for Easier Routine Inspections

Bluetooth allows quick data access without removing the logger. Using a smartphone or tablet, you can review readings even in enclosed or hard-to-reach areas - making inspections faster and more efficient.

Key Technical Features

  • Compact Bluetooth temperature data logger
  • Wireless data access via app
  • Integrated temperature sensor
  • Automatic interval recording
  • Suitable for long-term monitoring
  • Ideal for storage, transport and cold chain
  • Clear trend tracking
  • Flexible, space-saving design
  • Supports quality assurance and compliance

Protect Temperature-Sensitive Products During Storage

Continuous logging reveals temperature fluctuations between checks. The testo 174 T BT helps identify risks such as heat exposure or cold spots - supporting safe storage of food, pharmaceuticals and other sensitive goods.

Compact Design for Flexible Placement

Its mini format fits easily into refrigerators, cabinets, packages and transport containers. Lightweight and versatile, it supports both fixed and mobile monitoring across multiple locations.

Support Cold Chain Monitoring with Reliable Data

Tracks conditions throughout transport, helping verify delivery quality and detect temperature breaches. Ideal for logistics, healthcare and food distribution.

Simple App-Based Documentation for Quality Control

Data can be reviewed, exported and used for reporting or audits via the app. Enables quick analysis of trends, min/max values and limit breaches - reducing manual work.

A Compact Bluetooth Data Logger for Everyday Temperature Control

The testo 174 T BT combines reliable monitoring with wireless convenience. It helps improve traceability, protect goods and streamline temperature checks across daily operations.

Temperature - NTC

Measuring range
-30 to +70 °C
Accuracy
±0.5 °C (-30 to +70 °C)
Resolution
0.1 °C

General technical data

Weight
35 g
Dimensions
60 x 38 x 18.5 mm
Operating temperature
-30 to 70 °C
Product-/housing material
Plastic
Protection class
IP65
Channels
1 internal
Product colour
white
Standards
EN 12830; HACCP International; NSF
Measuring rate
1 min - 24 h
Battery life
500 days (15 min measuring cycle, +25 °C)
Battery type
2 lithium batteries (CR2032)
Memory
16,000 measuring values
Storage temperature
-40 to +70 °C
testo 174T BT mini temperature data logger including wall bracket, battery (2 x CR2032 lithium) and test report.

  • not available

Accessories

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: 0515 5174

Lithium battery CR2032 button cell
Button cell battery (CR2032, lithium)
Contact Us
Testo Ltd
Newman Lane
GU34 2URAlton
HampshireUnited Kingdom
01420 544433

Opening hours

Monday-Thursday: 8:30am - 17:00pmFriday: 8:30am - 16:00pm
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