Testo 905i – Thermometer Bluetooth – (0560 1905)


The Testo 905i Smart Probe is an air temperature Smart Probe that quickly and accurately measures temperature in rooms, ducts, registers, and environmental boxes/chambers.

Key Features:

  • Quickly and accurately measures air temperature in rooms, ducts, registers, and outlets
  • Fast acting temperature probe quickly tracks changes and shows trends on a graphic display
  • Measurement data is transmitted to the convenient and powerful testo Smart Probes App in your smart device
  • Tough, accurate, and easy-to-use


Users can remotely read the measurements from
this or multiple probes 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. Great 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.

The testo Smart Probes App is a powerful and easy-to-use tool. It allows you to remotely read measurements from up to six (6) Smart Probes and easily document/report the results. Automatic calculations make it a snap!

All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and/or shared by email. All your data can be stored and retrieved saving you hours of time consuming paperwork!

What’s included:

Testo 905i, Bluetooth thermometer with App, incl. 3 AAA batteries and certificate of calibration

Product Brochure


Temperature – Type K TC

Technical data
Measuring range -58° to 302 °F / -50 to +150 °C
Accuracy ±2 °F / ±1 °C
Resolution 0.1 °F / 0.1 °C

General technical data

Technical data
System requirements requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Warranty 2 years
Battery type 3 AAA micro batteries
Battery life 250 h
Length probe shaft 3.9 in. / 100 mm
Storage temperature -4° to 140 °F / -20 to +60 °C
Dimensions 9 x 1 x 1 in. / 222 x 30 x 24 mm
Operating temperature -4° to 122 °F / -20 to +50 °C


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