COVID-19 Landing Page
The testo 755 current/voltage testers are fast and easy to use, especially when you are testing many circuits. The convenient open-jaw current tester automatically turns on when voltage exceeds 6V. It then auto-selects the correct parameters and range for your test. These rugged testers are suitable for virtually all your daily electrical measuring tasks.


The instruments include important functions such as current, voltage, resistance & continuity. The integrated flashlight enables users to work in poorly lit areas. The overall design is for convenient testing including interchangable measuring tips which can be easily updated and maintained. A convenient lead holder is integrated into the housing for safe and easy storage.

Testo’s history of efficiency, innovation, and quality now extends into the entire electrical lineup. Once again, Testo brings high value, feature-packed products to the HVAC contractor market..

What's Included:
  • Testo 755-1 current / voltage meter 200 A AC, 600 V AC/DC, with built-in flashlight
  • Includes batteries and measuring tips

Technical Data:
  • DC Voltage Resolution: 6 to 600 V / 0.1 V
  • DC Voltage Accuracy: ± (1.5 % of mv + 3 Digit)
  • AC Voltage Resolution: 6 to 600 V / 0.1 V
  • AC Voltage Accuracy: ± (1.5 % of mv + 3 Digit)
  • AC Current Resolution: 200 A / 0.1 A
  • AC Current Accuracy: ± (3 % of mv + 3 Digit)
  • Resistance Resolution: 100 kOhm / 1 Ohm
  • Resistance Accuracy: ± (1.0 % of mv + 5 Digit)
  • Protection class: IP64
  • Warranty: 2 years
  • Storage temperature: 5° to 140 °F / -15 to +60 °C
  • Weight: 11 oz.
  • Overvoltage Category: CAT IV 600V; CAT III 1000V
  • Authorizations: CSA; TÜV; CE
  • Dimensions: 8 x 2 x 2 in. / 199 x 62 x 40 mm
  • Operating temperature: 14° to 122 °F / -10 to +50 °C

Key Features:
  • Meter automatically detects testing in-process and selects correct meter configuration which saves time and optimizes accuracy
  • Polarity detection for DC circuits
  • 3-phase sequence check with motor rotation indication
  • Single lead voltage test with audible indication
Read more
Manuals (1)
Product Type:
Voltage Meter
Cat III - 1000V
Cat IV - 600V
2 Years
Speak with a real person who will go out of their way to help!
Closed Now: Phone Hours
Monday – Friday
8am–7:45pm ET

Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.