Testo 915i Smart Thermometer with Air Probe TC Type K for Wireless Temperature Measurement - 0563 3915


0563 3915

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Wireless temperature measurement: The testo 915i thermometer with smartphone operation and Bluetooth is part of the popular Testo Smart Probes portfolio. The thermometer provides fast, reliable measurement results and is versatile and easy to use thanks to the robust probe – making it ideal for carrying out your measurements, e.g. of ambient temperatures as well as temperatures in ducts and at air outlets.

The wireless Smart Probe testo 915i with plug-in TC probes makes temperature measurements even faster, easier and more flexible. Thanks to the innovative locking mechanism with compatibility with all Testo and other common Type K thermocouple probes, the Smart Probe can be used in the most diverse applications.

Ideal for measuring ambient temperature and temperatures in ducts or at air outlets: The wireless thermometer testo 915i with robust, fast-response air probe will enable you to tackle your temperature measurements with greater speed, flexibility and ease.

The testo 915i automatically connects to your smartphone/tablet or compatible testo measuring instrument via Bluetooth. The testo Smart App facilitates intuitive operation, clear display of measurement data as well as documentation and sending of reports on site. The handle is compatible with all standard type K thermocouple probes – making it versatile.


  • Smart Probe for wireless temperature measurement in a wide range of applications, thanks to a large selection of probes and compatibility with standard type K thermocouple probes
  • Robust, fast-response air temperature probe (TC type K, class 1) with secure attachment via innovative locking mechanism in the handle, ideal for measuring ambient temperature as well as temperatures in ducts and at air outlets, measuring range -50 to +400 °C
  • Easy operation, evaluation and documentation with free testo Smart App as well as automatic Bluetooth® connection to smartphones, tablets or Testo measuring instruments (e.g. testo 400, testo 550s) with a range of up to 100 m
  • High measurement accuracy thanks to system calibration ex-works


testo 915i - Thermometer with air probe and smartphone operation

  • Robust, fast-response air temperature probe (TC type K, class 1), measuring range -50 to +400 °C
  • High measuring accuracy up to ±1.0 °C thanks to system calibration ex-works
  • For fast, wireless ambient temperature measurements and measurements in ducts and at air outlets
  • Innovative locking mechanism on the handle for easy, secure attachment of plug-in Testo measuring probes
  • Versatile in all temperature-relevant applications: Compatible with all Testo and standard type K thermocouple probes
  • testo Smart App: Display of readings, clear graphical presentation of temperature curves, create documentation on site and send as a PDF or CSV file
  • Automatic Bluetooth connection to smartphones, tablets or compatible Testo measuring instruments
  • Bluetooth with a range of up to 100 m
  • Handy, robust housing
  • Thanks to its proven quality and great durability, you can rely on your Testo Smart Probe in all conditions

System requirements:

  •  iOS 12.0 or newer
  • Android 6.0 or newer
  • Bluetooth 4.0


  • Wireless Smart Probe testo 915i with air probe (TC Type K)
  • Batteries
  • Calibration protocol

Also available in Testo 915i Smart Thermometer Kit with 3 Temperature Probes (air, immersion/penetration & surface) TC Type K for Wireless Temperature Measurement - 0563 5915. Click here.


Temperature - TC Type K (NiCr-Ni)
Measuring range -50 to +400 °C
Accuracy ±1.0 °C (-50 to +100 °C)
±1 % of mv (Remaining Range)
Resolution 0.1 °C
Reaction time t₉₀: 60 s


General technical data
Operating temperature -20 to +50 °C
Storage temperature -20 to +60 °C
Product-/housing material Plastic
Protection class IP20
System requirements requires iOS 12.0 or newer; requires mobile end device with Bluetooth 4.0; requires Android 6.0 or newer
Product colour black/orange
Plug-in probe connection Lockable connection to 4 standard probes testo 915i; Standard plug-in connection to other common TC probes
Length probe shaft 99 mm
Diameter probe shaft 4 mm
Battery type 3 AAA micro batteries
Battery life 150 h
Data transfer Bluetooth®; automatic connection to testo Smart App and Testo measuring instruments
Radio range 100 m
Weight air probe: 11 g
Bluetooth® handle: 88 g
Dimensions Bluetooth® handle: 129 x 31 x 31 mm (LxWxH)


Buy with 100% confidence knowing your purchase is backed by the full Manufacturer's Warranty. Please register your product with provided warranty card.


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