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Electrical Testers

Check before you touch with electrical testers from Knightsbridge. The range covers a 13A socket tester that flags common faults on three-pin sockets, plus non-contact voltage testers that detect AC from 80 to 1000V, and a two-pole tester rated IP64 to CAT III with LED and LCD display. Compact pocket tools for home, commercial and site work.

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Check before you touch

An electrical tester tells you whether a circuit is live or wired correctly before you work on it or rely on it. The testers here are pocket tools for that quick safety check, whether you are sorting a socket at home, working on a commercial fit-out or checking on site.

Socket testers

A socket tester plugs into a three-pin socket and flags common wiring faults through its indicators. It is a fast way to confirm a socket is wired as it should be, which is handy after work has been done or when a socket is behaving oddly.

Non-contact voltage testers

A non-contact voltage tester detects AC voltage without touching a bare conductor. The unit here senses from 80 to 1000V AC, so you can check a cable, socket or fitting for the presence of voltage before going further.

Two-pole testers

A two-pole tester checks voltage by contact across two points, with an LED and LCD display to read the result. It gives a clearer reading than a simple pen-style tester when you need to confirm what is present on a circuit, and the rated build here is made to stand up to regular use on commercial and site work rather than the odd job at home.

Tools that fit the pocket

All three testers are compact enough to carry in a pocket or a tool bag, so the right check is always to hand rather than left on the bench. That matters most when you are moving between jobs and want a quick way to confirm a circuit before you start, whether that is at home, on a commercial fit-out or out on site.

Choosing a tester

Pick the socket tester for checking three-pin sockets, a non-contact tester for a quick live or dead check without contact, and a two-pole tester where you want a measured reading. Many trades carry more than one, since the quick non-contact check and the measured reading answer different questions. Free UK delivery over £99, worldwide shipping.

Frequently Asked Questions

What does the socket tester check?
The 13A socket tester plugs into a standard three-pin socket and uses indicator lights to flag common wiring faults, giving a quick visual check of the socket before use.

How does a non-contact voltage tester work?
You hold the pen-style tester near a cable or terminal and it signals when AC voltage is present, without touching a live part. The model here detects from 80 to 1000V AC and is rated CAT III.

What does the IP64 and CAT III rating mean?
IP64 means the two-pole tester is dust-tight and protected against water splashes, suited to site use. CAT III is a measurement category for fixed installation circuits. It also has LED and LCD readouts for clearer results.

Can I rely on a tester instead of an electrician?
A tester is a checking aid, not a substitute for proper work. Use it to confirm a reading, but any fixed-wiring fault it reveals should be investigated and put right by a qualified electrician.

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