Testo 905i Wireless Thermometer with Smart Bluetooth Technology


Product Features

  • The Testo 905i (0560 1905) Thermometer Smart and Wireless Probe is an air temperature Smart Probe that uses a Type K thermocouple to quickly and accurately measure temperature in rooms, ducts, registers, and environmental boxes/chambers.
  • Users can remotely read the probe’s measurements by using the Testo Smart Probes App installed on their Smart device.
  • Smart Probes can be used individually or in combination with other Smart Probes to create measuring solutions for most HVAC/R applications.
  • The probes are ideal for setup and diagnostics of large and small HVAC/R systems.
  • The Testo 905i works on smart devices with either Android or Apple operating systems.

Additional information


Type K TC

Measuring range

-58° to 302 °F / -50 to +150 °C


±2 °F / ±1 °C


0.1 °F / 0.1 °C


2.90 oz. / 82.2 g


9 x 1 x 1 in. / 222 x 30 x 24 mm

Operating temperature

-4° to 122 °F / -20 to +50 °C

System requirements

requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0

Battery type

3 x AAA

Battery life

150 h

Length probe shaft

3.937 in. / 100 mm

Storage temperature

-4° to 140 °F / -20 to +60 °C


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