Testo 605i Thermal Hygrometer

 
  • 0 to 100 percent RH range
  • ±1.8 percent RH accuracy
  • -20 to +60 °C NTC sensor
  • Bluetooth app data logging
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£81.59 (ex VAT)

£97.91 (inc VAT)

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Usually ships In 3 to 5 working days
  • 0 to 100 percent RH range
  • ±1.8 percent RH accuracy
  • -20 to +60 °C NTC sensor
  • Bluetooth app data logging
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£81.59 (ex VAT)

£97.91 (inc VAT)

Earn 81 points

Usually ships In 3 to 5 working days
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Testo 605i Thermal Hygrometer

Testo 605i Thermal Hygrometer is a compact probe for measuring air humidity and temperature. It connects to a smartphone or tablet and sends readings directly to the Testo Smart Probes App. As a result, you can view live data and store results with ease.

Designed for use in rooms and ducts, this smart probe helps you check climate conditions quickly. It measures relative humidity from 0 to 100 percent and temperature from -20 to +60 °C. In addition, the app calculates dew point and wet bulb temperature automatically.

Smart App Control

Using Bluetooth, the Testo 605i Thermal Hygrometer links to compatible iOS or Android devices. The app displays clear readings and allows you to save measurement reports. You can also add photos and notes, then send reports by email straight from site.

Data stays organised within the app, which improves workflow and reduces paperwork. Because readings are shown in real time, you can react quickly to changes in air conditions. This makes the instrument ideal for service and maintenance work.

Reliable Sensor Performance

A capacitive humidity sensor delivers stable RH readings across the full measuring range. At the same time, the built in NTC sensor provides accurate temperature values. Together, these sensors support consistent indoor climate checks.

The Testo 605i Thermal Hygrometer runs on three AAA batteries and offers up to 250 hours of battery life. Its slim probe shaft reaches into ducts with ease, while the compact body saves space in your toolkit.

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Testo 605i Thermal Hygrometer

Testo 605i Thermal Hygrometer is a compact probe for measuring air humidity and temperature. It connects to a smartphone or tablet and sends readings directly to the Testo Smart Probes App. As a result, you can view live data and store results with ease.

Designed for use in rooms and ducts, this smart probe helps you check climate conditions quickly. It measures relative humidity from 0 to 100 percent and temperature from -20 to +60 °C. In addition, the app calculates dew point and wet bulb temperature automatically.

Smart App Control

Using Bluetooth, the Testo 605i Thermal Hygrometer links to compatible iOS or Android devices. The app displays clear readings and allows you to save measurement reports. You can also add photos and notes, then send reports by email straight from site.

Data stays organised within the app, which improves workflow and reduces paperwork. Because readings are shown in real time, you can react quickly to changes in air conditions. This makes the instrument ideal for service and maintenance work.

Reliable Sensor Performance

A capacitive humidity sensor delivers stable RH readings across the full measuring range. At the same time, the built in NTC sensor provides accurate temperature values. Together, these sensors support consistent indoor climate checks.

The Testo 605i Thermal Hygrometer runs on three AAA batteries and offers up to 250 hours of battery life. Its slim probe shaft reaches into ducts with ease, while the compact body saves space in your toolkit.

Key Features
  • Compatible with iOS and Android smartphones
  • Accurate air temperature and humidity measurement
  • Wireless data transfer using Bluetooth 4.0
  • Automatic dewpoint and wet bulb calculation
  • Uses Testo Smart Probes App for full control
  • Data exportable in PDF or Excel format
  • Ideal for use in ducts and indoor environments
  • Compact and easy to transport with probe shaft
  • View, save and email reports directly from the app
  • Works with Testo 405i to assess HVAC performance

 

Technical Specifications
SpecificationDetails
Product nameTesto 605i Thermal Hygrometer
Manufacturer part code0560 2605 03
Temperature sensor typeNTC
Temperature measuring range-20 to +60 °C
Temperature accuracy±1 digit ±0.8 °C (-20 to 0 °C), ±0.5 °C (0 to +60 °C)
Temperature resolution0.1 °C
Humidity sensor typeCapacitive
Humidity measuring range0 to 100 %RH
Humidity accuracy±1 digit ±(1.8 %RH + 3 % of m.v.) at 25 °C (5–80 %RH)
Humidity resolution0.1 %RH
ConnectivityBluetooth 4.0
App compatibilityiOS 8.3 or later / Android 4.3 or later
Operating temperature-20 to +50 °C
Storage temperature-20 to +60 °C
Power supply3 x AAA micro batteries
Battery lifeUp to 250 hours
Dimensions243 x 30 x 24 mm
Probe shaft length100 mm
Warranty2 years

 

Comparison Table
ParameterHumidity MeasurementTemperature Measurement
Sensor TypeCapacitiveNTC
Measuring Range0 to 100 percent RH-20 to +60 °C
Accuracy±1.8 percent RH at +25 °C±0.8 °C to ±0.5 °C
Resolution0.1 percent RH0.1 °C

What’s Included
  • Testo 605i Thermal Hygrometer
  • Batteries

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