Testo 745 Non-Contact Voltage Tester

SKU: TES-745
Regular price £22.20 GBP
Manufacturer Part Number: 0590 7450
  • Voltage range up to 1,000 V
  • Waterproof and dustproof according to IP 67
  • Adjustable for phase detection or voltage indication
  • Visual and acoustic signal

The Testo 745 non-contact voltage tester is ideally suited for fast initial checking of any suspected fault sources. It filters high-frequency interference signals and has a two-stage sensitivity setting.


The testo 745 Non-Contact Voltage (NCV) Tester quickly checks for the presence of voltage in AC powered systems. It can be safely used up to 1000 VAC. When AC voltage is detected, the testo 745 gives indication by flashing RED LEDs and buzzing audible tones. You can easily determine the hot and neutral legs of an outlet without lengthy and risky removal of the outlet. The testo 745 NCV has a built-in Low Pass Filter which greatly reduces high frequency interference which causes false indications. The included LED flashlight is bright and focused to make testing simple in dark spaces. It also includes a low battery indication and is waterproof and dustproof rated per IP 67. The testo 745 is rated to CAT III 1000V and CAT IV 600 V.

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.

Technical Data

AC voltage

Measuring range

12 to 1000 V

General technical data

Operating humidity

0 to 80 %RH


63 g


155 x 25 x 23 mm

Operating temperature

-10 to +50 °C

Product colour


Protection class



EN 61326-1; EN 61010-1

Alarm function

via LED; audible

Battery type

2 AAA micro batteries

Storage temperature

-15 to +60 °C

Overvoltage Category

CAT IV 600V; CAT III 1000V



Instrument Measurement Functions

Measuring point illumination



Ideal for voltage testing

  • Voltage range up to 1000 V, filter for high-frequency interference signals, waterproof and dustproof according to IP 67, adjustable sensitivity (2 levels), visual and acoustic signal, integrated torch for measuring point illumination

Overview of applications

  • Non-contact voltage testing
  • Searching for cable breakages
  • Locating live and neutral wires