Clear Digital Display & Precise Readouts

This automotive circuit tester features a crisp LED digital screen for voltage measurement. It delivers 0.1V resolution with 0.2V measurement tolerance, offering sharp, legible digital values. Unlike LCD displays, the LED panel stays readable under bright sunlight and dim dark environments without light interference.

Extra-Long Spring Cord with Alligator Clip

The stretchable spring wire extends up to 110 inches, delivering great flexibility and covering a broad testing range. Its anti-break tail cord design avoids poor circuit contact issues. Paired with a large alligator clip, it supports effortless single-handed operation.

Dual-Way Polarity Indicator Light

A bidirectional LED diode on the internal board marks polarity clearly: red for positive terminals and green for negative terminals. Secure the alligator clip to either positive or negative ground, then touch the probe to the opposite circuit side for instant identification.

Built-In Protected Circuit Chip

This high-grade car fuse tester integrates an internal circuit board chip, safer and longer-lasting than conventional test lights. An insulated protective sleeve improves handling and prevents electric shock risks. The circuit board comes with built-in line protection for anti-burn safety.

Broad Automotive Application

This auto electrical test pen diagnoses all types of vehicle electrical circuits. Its sharp elongated probe pierces wiring and accesses tight narrow spaces, rapidly inspecting headlamps, taillights, turn signal wiring, faulty sockets, terminals, fuses and broken cables for daily vehicle maintenance.

What's in the box
1 x Circuit Tester