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Handheld automotive electrical tester with digital LED display and probe tip

Electrical System Tool 12G 24V

SKU CH-5B9J-2FFA7

A 6–24 V digital LED probe tester for automotive circuits, checking voltage, polarity, shorts and grounds with one hand‑held tool

  • Team affiliation1 Piece
  • Key featuresZKTOOL 6-24 V Digital LED Display Power Circuit Probe Tester
  • Multi-functional tester covers voltage, relay, diode, fuse and short-circuit checks
  • Bright LED backlight display reads 2-24V DC clearly in any lighting
  • Red and green LEDs instantly identify positive and negative polarity
  • Sharp probe tip penetrates wire insulation for access in tight spaces
  • Designed to protect vehicle computer during safe 6-24V DC system testing

12 G 24 V Automotive Electrical Tester

This 12 G 24 V probe kit checks voltage, polarity, relays, fuses and short circuits on vehicle electrical systems. The digital LED display reads 6–24 V DC clearly in daylight or darkness. Sharp tip penetrates wire insulation for access in tight spaces. Designed to protect the vehicle ECU while testing.

Replaces Basic Test Lights and Multimeters

A single tool performs the jobs of a test light, a polarity indicator and a voltage meter for DC circuits. The jump is worth it when you need instant polarity identification and voltage readout without swapping leads. Not for technicians who require AC measurement, data logging or scope waveforms.

Plug-and-Play With Alligator Clip Ground

Connect the clip to battery ground, probe the circuit and read the LED colour and voltage value. Red LED shows positive, green shows negative. Common mistakes: using on 110 V or 220 V household supply, probing near steam or dust, or ignoring the spark risk when the switch is pressed. For DC 6–24 V systems only.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $27.99
Cheaper than about 56% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameZKTOOL
More details
Team affiliation1 Piece

Questions about this item

What voltage range does the probe tester support for DC systems?

The tester works on DC 6V to 24V systems and must not be used with 110V or 220V household current.

How do I identify polarity using the LED indicators?

Red LED lights when the probe tip touches the positive pole; green LED lights when it contacts the negative pole.

What safety precaution should I follow to avoid sparks during testing?

When pressing the switch current flows from the battery to the probe tip and a spark may occur if it contacts ground or a circuit.

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