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

0572 1743 02
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  • 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 -20 °C to +70 °C
  • Reliable automatic data backup when the battery is empty or when changing the battery

    • The testo 174 H BT mini data logger with Bluetooth and app connection reliably monitors temperature and humidity in a measuring range from -20 °C to +70 °C. It transmits measurement values precisely and conveniently to the free testo Smart App on smartphone or tablet (iOS/Android).

    Reports can be created, customised with images and comments, and sent as PDF or Excel files. Thanks to 16,000 measured values per channel, automatic data backup and long-life sensors, it is ideal for monitoring moisture and temperature-sensitive goods as well as for continuous building climate control.

    Also available in white.

    • not available

    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 -20 °C to +70 °C, 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.

    testo 174 H BT mini temperature and humidity data logger including wall bracket, battery (2 x CR2032 lithium) and test report.

    Temperature - NTC

    Measuring range
    -20 to +70 °C
    Accuracy
    ±0.5 °C (-20 to +70 °C)
    Resolution
    0.1 °C

    Humidity - Capacitive

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

    General technical data

    Weight
    35 g
    Dimensions
    60 x 38 x 18.5 mm
    Operating temperature
    -20 to +70 °C
    Product-/housing material
    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 +70 °C

    Certificates

  • Certificates
    Calibration certificate
    ISO calibration certificate humidity
      :
      0520 0076
    • Certificates
      Calibration certificate
      ISO calibration certificate temperature
        :
        0520 0153

        • Contact
        Testo SMI Sdn Bhd
        100.3.017, 129 Offices, Block J, Jaya One, No 72A, Jalan Profesor Diraja Ungku Aziz, Seksyen 13,
        46200Petaling Jaya
        Selangor Darul EhsanMalaysia
        +603 9212 5617

        Opening hours

        Monday - Friday: 8:30am - 5:30pm

        © 2026

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