Best Handheld Circuit Testers of 2025

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 31 Jan 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Handheld circuit testers are essential tools for electricians and DIY enthusiasts alike. These devices quickly and easily test circuits, outlets, and wiring for faults, allowing users to diagnose problems and make repairs. With a variety of models available, these testers can detect voltage, current, and continuity, and some even feature additional functions such as GFCI testing and live circuit tracing. Whether you're a professional electrician or simply looking to tackle some home wiring projects, a handheld circuit tester is a valuable tool to have in your arsenal.

At a Glance: Our Top Picks

Silverline RJ11, RJ12 & RJ45 LAN Tester Cover #TOP 1
Silverline RJ11, RJ12 & RJ45 LAN Tester
ftb score rating icon 9.8
12V Radiant Relay Tester Kit Cover #TOP 2
12V Radiant Relay Tester Kit
ftb score rating icon 9.7
Fellflying 12V Battery Relay Tester Tool Cover #TOP 3
Fellflying 12V Battery Relay Tester Tool
ftb score rating icon 9.5

Top 3 Handheld Circuit Testers

Silverline RJ11, RJ12 & RJ45 LAN Tester

539465
Silverline RJ11, RJ12 & RJ45 LAN Tester Cover
Silverline LAN Tester RJ11, RJ12 & RJ45 (539465)

The Silverline LAN Tester is a hand-held device designed for testing RJ11, RJ12, and RJ45 cables. It helps you quickly identify connection errors, short circuits, and open circuits, making it easier for you to troubleshoot network issues. With both standard and slow speed display modes, you can choose the best setting for your needs. The tester includes master and remote units, providing versatility in your testing process. Simply insert a 9V battery, and you are ready to ensure your cables are functioning properly.

What We Like
Easy identification of connection errors
Two display modes available
Includes master and remote units
Hand-held and convenient to use
Suitable for multiple cable types
#TOP 2

12V Radiant Relay Tester Kit

OMA35JH106F66K1SR
12V Radiant Relay Tester Kit Cover
Relay Tester 12/24 Volt - 12V Radiant Tester Kit for Relay Buddy,Handheld Automotive Relay Diagnostic Tool, A/C Relay Tester for Car/SUV/Truck

The Relay Tester Kit is designed to enhance your testing efficiency, allowing you to easily evaluate relay performance. With a green LED indicating functionality and a red LED signalling failure, you can quickly track data and timing. Built to last, this tool features outstanding durability and is made from high-quality materials, ensuring safe use while testing automotive relays. Its lightweight and compact design make it ideal for on-the-go diagnostics, so you can easily pack it in the carry bag and test your electrical systems wherever you are.

What We Like
Improved testing efficiency
Outstanding durability
Lightweight and portable
Wide application range
#TOP 3

Fellflying 12V Battery Relay Tester Tool

Fellflying
US732H6Y5C1XDUJ5V5
Multicolor
Fellflying 12V Battery Relay Tester Tool Cover
Relay Tester | 12V Battery Relay Buddy Radiant Tester | Handheld Automotive Relay Diagnostic Tool, A/C Relay Tester for Car/SUV/Truck

The Fellflying Relay Tester offers a wide range of applications, making it an essential tool for testing 12V sensor and battery voltage, as well as automotive relays. You can effortlessly evaluate relay performance with its innovative LED indicators, which alert you to faults and confirm proper function. Its durable design ensures that you can rely on accurate results every time. Plus, its lightweight and compact build allows you to carry it anywhere, making it convenient for at-home or on-the-go testing.

What We Like
Wide application range
Easy fault detection
Durable construction
Lightweight and portable
Buying Guide Image
Editor's Notes

During our handheld circuit tester research, we found 43 handheld circuit tester products and shortlisted 3 quality products. We collected and analyzed 10,559 customer reviews through our big data system to write the handheld circuit testers list. We found that most customers choose handheld circuit testers with an average price of £6.98.

The handheld circuit testers are available for purchase. We have researched hundreds of brands and picked the top brands of handheld circuit testers, including Silverline, Fellflying.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.