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Testo 440 Humidity Kit with Bluetooth

Testo
SKU: TESTO440HUMIDITYKIT
  • Wireless humidity and temperature kit for flexible indoor climate measurement
  • Automatically calculates dew point, wet bulb temperature and absolute humidity
  • Stores 7,500 readings and exports data via USB for reporting
More Info
Typically ships in 5-7 working days

Testo 440 Humidity Kit with Bluetooth

The Testo 440 Humidity Kit with Bluetooth is a practical solution for measuring humidity and temperature across a wide range of indoor and controlled environments. Supplied with the testo 440 air velocity and IAQ measuring instrument and a Bluetooth humidity/temperature probe, it is well suited to checks in storage areas, HVAC ducts, cold rooms, refrigeration systems and general work environments where reliable climate monitoring is important.

A major strength of the kit is its ability to support both straightforward spot checks and more detailed climate assessment. The testo 440 offers clearly structured measurement menus for parallel humidity and temperature measurement, while also automatically calculating values such as dew point, wet bulb temperature and absolute humidity. This helps users assess environmental conditions more efficiently and gives the kit wider value for HVAC, facilities and indoor climate work.

The Bluetooth connection helps reduce cable clutter and gives users more freedom when working in awkward spaces or around installed equipment. The testo 440 platform also supports broader IAQ work with additional compatible probes, while onboard memory can store up to 7,500 readings and the USB interface allows data export as CSV files for reporting and analysis. Supplied in a basic case, this is a strong kit for users who want a professional, expandable humidity measurement setup.

Testo part number: 0563 4404

Key Features

  • Complete kit with testo 440 measuring instrument and Bluetooth humidity/temperature probe
  • Designed for monitoring humidity and temperature in storage rooms, HVAC ducts, cold storage facilities and work areas
  • Structured measurement menus for long-term and parallel humidity/temperature measurement
  • Automatically calculates dew point, wet bulb temperature and absolute humidity
  • Bluetooth connectivity gives more flexibility on site and reduces cable clutter
  • Stores up to 7,500 readings and exports results via USB as CSV files
  • Humidity probe measures 0 to 100% RH and -20 to +70°C
  • Probe battery life up to 140 hours
  • Expandable with additional compatible probes for wider IAQ and climate diagnostics

What's In The Box?

  • Testo 440 Air Velocity and IAQ Measuring Instrument
  • Humidity/temperature probe (Ø 12mm) with Bluetooth®* (consisting of humidity/temperature probe head and Bluetooth® handle)
  • Basic case for Testo 440 and 1 probe
  • 7 x AA batteries (3 for 404, 4 for probe)
  • USB cable
  • Calibration protocol for Testo 440
  • Calibration protocol for Humidity/temperature probe
Specification

Testo 440

Temperature – NTC

  • Measuring Range - -40 to +150°C
  • Accuracy:
    - ±0.4°C (-40 to -25.1°C)
    - ±0.4°C (+75 to +99.9°C)
    ±0.5% of mv (Remaining Range)
    ±0.3°C (-25 to +74.9°C)
  • Resolution – 0.1°C

Temperature – TC Type K (NiCr-Ni)

  • Measuring Range - -200 to +1370°C
  • Accuracy - ±(0.3°C + 0.3% of mv)
  • Resolution – 0.1°C

General Technical Data

  • Weight – 250g
  • Dimensions – 154 x 65 x 32mm
  • Operating Temperature - -20 to +50°C
  • Connectable Probes – 1 x digital probe with cable or 1 x Temperature NTC TUC, 1 x digital Bluetooth probe or Testo Smart Probe, 1 x Temperature TC Type K
  • Product Colour – black/orange
  • Battery Type – 3 x AA mignon 1.5V
  • Battery Life – 12h (typically vane measurement)
  • Interface – Bluetooth®; USB
  • Storage Temperature - -20 to +50°C

Humidity/Temperature Probe

Temperature – NTC

  • Measuring Range - -20 to +70°C
  • Accuracy - ±0.5°C
  • Resolution – 0.1°C

Humidity – Capacitive

  • Measuring Range – 0 to 100% RH
  • Accuracy:
    - long-term stability: ±1 %RH / year
    - ±0.03 %RH/K (k=1)
    - ±2 %RH (5 to 90 %RH)
  • Resolution – 0.1% RH

General Technical Data

  • Storage Temperature - -20 to +60°C
  • Weight – 165g
  • Dimensions – 290 x 50 x 40mm
  • Operating Temperature - -5 to +50°C
  • Diameter Probe Shaft – 12mm
  • Length Probe Shaft – 140mm
  • Product Colour – Black/orange
  • Battery Type – 4 x AA batteries
  • Battery Life – 140h
  • Data Transfer - Bluetooth®