Yuio 3v-120v Circuit Tester with Digital Test Light, Car Fuse Tester with Spring Wire, Voltage Tester, Power Probe with LED Display, Electricity Tester for Automotive Fuse Wiring Circuit Checking

Price: £7.19
(as of Sep 27, 2025 16:18:12 UTC – Details)


Specification:
Material: ABS
Color: Red spring wire
Size:
Test head length 8cm/pen body length 11cm/coil length 80-180cm
Measuring range: 3v-120v
Test Range: 3V 6V 12V 24V 48V 90V 120V Universal
Package contents: 1 circuit tester
Designed to detect low voltage circuit faults in transport machinery.
Used to test power, ground and find shorts and breaks in wires.
Quickly check car headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and more.
Test Instructions:
Clip to clamp negative pole, Pen tip to measure positive pole, Digital display shows voltage with green light.
Clip to clamp positive pole, Pen tip to measure negative pole, Displays red light.
When in use, measure intermittently, use the touch method, and do not power on for more than 3 seconds to avoid burning the circuit board.
Notice:
When using a car voltage detection pen, intermittent measurements should be made and the point-touch method should be used. It is recommended that the power-on time should not exceed 60 seconds to avoid burning the circuit board!
Features:
The red light indicates the positive pole of the power supply, and the green light indicates the negative pole of the power supply.
Clear digital display and LED indication make it easy for you to read the voltage and positive and negative poles.
Lightweight design and super portable, you can take it with you anywhere.
With this circuit tester, you can easily pinpoint the problematic wire.
Alligator clips and spring wires provide more flexibility than regular cable wires.
Ideal for testing circuits, fuses, switches and cables on cars, trailers, boats, motorcycles and other low voltage systems.
Complete Package for Vehicle Circuit Testing – Includes one circuit tester with a 19 cm metal probe and a flexible spring wire extending from 60 cm to 1.8 meters. Designed to handle 3V–120V DC circuits, this tester is perfect for a wide range of automotive electrical diagnostics, from checking fuses and sockets to troubleshooting broken wires or faulty connections
Bidirectional Voltage Detection with Polarity Indicator – Equipped with an easy-to-use alligator clip, this tester can connect to either the negative or positive ground. Its integrated LED polarity indicator provides instant feedback: a red light signals a positive connection (“+”), while a green light signals a negative connection (“–”), allowing users to identify circuit conditions quickly and confidently
Durable, Heat-Resistant Build – The handle is crafted from ABS plastic, providing excellent resistance to both electricity and heat for added safety. The metal probe enhances durability, ensuring long-term performance even with frequent use. Designed for professional and DIY mechanics alike, this tester delivers rugged reliability in demanding automotive environments
User-Friendly Design for Hard-to-Reach Areas – The extendable cable and slim probe make it easy to access tight, hard-to-diagnose spaces within your vehicle’s electrical system. The sharp, precise probe tip easily pierces wires and connectors, delivering accurate readings without the need for excessive disassembly, saving you time and effort during repairs
Versatile Applications Across Vehicle Systems – This 3–120V electric tester is ideal for diagnosing a wide range of automotive systems, including headlights, taillights, turn signals, fuses, sockets, connections, and more. Whether you’re a professional technician or a car enthusiast, this versatile tool helps you quickly isolate issues and improve repair efficiency across multiple vehicle types