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Testo 805i

Contact Instrument Solutions


The Testo 805i smart probe is an infrared (IR) thermometer that provides non-contact temperature readings, with the measurement area indicated by a circular laser pattern which asssures accurate targeting.

The Testo smart probes can be used individually or combined with other smart probes to create measuring solutions for most HVAC / HVAR applications.


The Testo 805i works on smart devices with either Android or Apple operating systems. The App is a powerful and easy-to-use tool that allows you to remotely read measurements from up to six (6) smart devices. 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.


Temperature measuring range -30 to +250 °C

Temperature accuracy ±2.5 °C (-30 to -20.1 °C), ±2 °C (-20 to -0.1 °C), ±1.5 °C or ±1.5 % of mv (0 to +250 °C)

Temperature resolution 0.1 °C

Emissivity 0.10 to 1.00

Measurement spot marking Diffractive optics (laser circle)

Distance to measurment spot ratio 10,1

Testo smart App system requirements Mobile device requires iOS 8.3 or newer, or Android 4.3 or newer operating systems; Device also needs Bluetooth 4.0 capabilities

Warranty 2 years

Battery type x3 AAA batteries

Battery life 30 hours typical

Support documents

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Testo smart probe user manual.pdf Testo smart probe user manual
Technical document
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Adobe Acrobat
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