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Electrical instrumentation

The electrical measuring instruments from Testo - think ahead where others only measure.

The New Generation of Electrical Measuring Instruments

Testo sets new standards in electrical measuring technology.

Whether multimeters, clamp meters, current testers or voltage testers – thanks to innovative technologies, Testo electrical instrumentation measures electrical parameters such as current, voltage, or resistance more reliably and precisely than ever before.

Find out about service, calibration, and training. For better performance in electrical testing.

Find electrical instrumentation from Testo

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Testo's electrical meters at a glance


testo 770-3

Clever Digital Multimeters

Testo’s Digital Multimeters feature button operation and avoid any incorrect settings! It doesn’t matter whether you are measuring a voltage or an ionization current – there couldn’t be more reliability.

  • Automatic detection and selection of measurement parameters via socket assignment

  • Easy operation via function keys and large illuminated display

  • With true root mean square measurement TRMS


testo 770-3

Innovative Clamp Meters

Don’t you have the ideal clamp meter for non-contact measurement of both current as well as voltage and other electrical parameters in tight switching cabinets? We do.

  • Innovative clamp mechanism to grab individual cables without issue.

  • With additional functions for starting current, output, and measurement in the μA range

  • Communication with the testo Smart App via Bluetooth


testo 755-2

Current / Voltage Testers

The first voltage testers in line with DIN-EN 61243-3:2014 which also measure current. Suited for a wide range tasks involved in testing current and voltage.

  • Reliable voltage display, even with an empty battery

  • Measure immediately

  • Exchangeable measuring tips


testo 770-3

Voltage Tester with 360° display

Only Testo has voltage testers with 360 degree illumination. Thanks to unique light technology, readings can be clearly seen from any position. This means you can measure voltage more reliably.

  • Certified according to the DIN-EN 61243-3:2010 voltage tester standard

  • Anti-slip ring for a secure hold when testing

  • Safety specification according to CAT III


testo 745

Non-contact Voltage Tester

The non-contact voltage tester is suitable for initial checking possible fault sources. Indispensable for work on electrical systems!

  • Voltage range up to 1,000 V

  • Filter for high-frequency interference signals

  • Adjustable for phase detection or voltage indication