
Voltage testers are essential pieces of test equipment commonly used by electricians to measure ac/dc voltage and continuity. They are small hand-held devices that give the user an instant and clear indication (via LCD Display, Light, or Sound) as to whether a circuit is live. Voltage testers, also known as voltage indicators or electricity testers, are used during electrical installation and servicing, for diagnosing electrical problems, and for troubleshooting connection issues and breaks in cables. 

Our range of voltage testers include [non-contact voltage testers](https://uk.rs-online.com/web/c/test-measurement/electrical-test-measurement/non-contact-voltage-magnetic-field-indicators/), two pole, and [digital voltage testers](https://uk.rs-online.com/web/c/test-measurement/electrical-test-measurement/voltage-testers/?applied-dimensions=4294813098) and sourced from leading brands such as Beha-Amprobe, [Chauvin Arnoux](https://uk.rs-online.com/web/c/test-measurement/electrical-test-measurement/voltage-testers/?applied-dimensions=4294966776), Gossen Metrawatt, Martindale, John Drummond, Testo, and [Fluke](https://uk.rs-online.com/web/c/test-measurement/electrical-test-measurement/voltage-testers/?applied-dimensions=4294966303). 

Ensure safety and accuracy with our range of calibrated voltage testers at RS. When you choose a calibrated voltage tester from RS, you benefit from our comprehensive [calibration services](https://uk.rs-online.com/web/content/services/maintenance-solutions/rs-calibration). Our UKAS-accredited laboratory ensures that each device is fine-tuned to the highest standards, providing you with confidence in your measurements. We offer quick turnaround times, with new products calibrated and delivered within three days, and re-calibration services completed within five days

New to Voltage Testing? Learn [How to use a Voltage Tester](https://uk.rs-online.com/web/content/discovery/ideas-and-advice/voltage-testers-guide) in our helpful guide. 
 

## Why would you use a voltage tester?

By using a voltage tester to establish if voltage is present means that you are complying with health and safety recommendations for safe electrical work. They are now available everywhere for people that work with electricity to be able to test the voltage levels of their circuits without risking being electrocuted themselves. They can used to:

- Finding breaks in power cables
- Checking plug wiring and fuses
- Distinguishing between live and neutral wires
- Determining live cables injunction boxes
- Finding faulty switches


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