Image
  1. Home
  2. testo 174 H BT
0572 1743 02

testo 174 H BT - Mini data logger for temperature and humidity with Bluetooth® and app connection

Image
Image
Image
Image
Image
Image
Image
The testo 174 H BT mini data logger is the ideal solution for commissioning, inspection and maintenance of all HVAC/R systems. It reliably monitors temperature and humidity in a measuring range from -4 °F to 158 °F and stores up to 16,000 values. Configuration and analysis are easy with the free testo Smart App.
 
  • Free app including report generation and export function
  • Simple data analysis via Bluetooth directly at the measuring point from up to 30 metres away
  • Accurate indoor humidity and temperature measurement from -4 °F to 158 °F
  • Reliable automatic data backup when the battery is empty or when changing the battery
<p>The testo 174 H BT mini data logger is ideal for efficient commissioning, inspection and maintenance of all HVAC/R systems, as well as for convenient fault diagnosis and monitoring of the indoor climate. It accurately measures temperature and humidity in the range -4 °F to 158 °F, displays current values and limit value violations and stores up to 16,000 readings. Simple configuration and evaluation of the data logger is carried out via the free testo Smart App, which enables intuitive reporting and data analysis via Bluetooth up to 30 metres away.

The automatic data backup ensures reliable measurement data recording, even when the battery is empty or during a battery change.

Temperature - NTC

Measuring range
-4° to 158 °F / -20 to +70 °C
Accuracy
±0.9 °F (-4° to 158 °F) / ±0.5 °C (-20 to +70 °C)
Resolution
0.1 °F / 0.1 °C

Humidity - Capacitive

Measuring range
0 to 100 %rH*
Accuracy
±0.03 %rF/K
±3 %rH (2 to 98 %rH)
Resolution
0.1 %rH
* Not for condensing atmospheres.

General technical data

Weight
1.24 oz. / 35 g
Dimensions
2 x 1 x 0.7 in. / 60 x 38 x 18.5 mm
Operating temperature
-4° to 158 °F / -20 to +70 °C
Housing
Plastic
Protection class
IP20
Channels
2 internal
Product colour
Black
Measuring rate
1 min - 24 h
Battery life
1 year (15 min measuring cycle, +25 °C)
Battery type
2 lithium batteries (CR2032)
Memory
16,000 measurement value pairs (16,000T + 16,000H)
Storage temperature
-40° to 158 °F / -40 to +70 °C
testo 174 H BT mini temperature and humidity data logger including wall bracket, battery (2 x CR2032 lithium) and test report.

  • not available
Headquarters
Testo Inc.
40 White Lake Road
07871Sparta
New Jersey
800-227-0729

© 2026