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Blue handheld circuit probe tester with LCD display, clamp leads and built-in flashlight

aFe Power Circuit Probe Tester 3.5-36V DC Blue

SKU CH-MR6F-2A12R

Tests DC circuits from 3.5 to 36 volts with LCD readout, built-in flashlight and overload protection

  • Team affiliation1 Piece
  • Key featuresCircuit Tester Automotive, Corded Electric
  • Product typeClamp
  • Tests voltage and polarity 3.5-36 V DC
  • Continuity and signal circuit checks built in
  • Activates components and finds bad grounds
  • LCD screen plus flashlight for dark areas
  • Overload protection with audible warning beep

Versatile Circuit Probe Tester

The aFe Power circuit probe tester is a corded electric tool designed for automotive electrical diagnostics. It performs voltage and polarity checks, continuity tests, signal circuit verification, component activation, and bad ground detection. The kit also locates short circuits and includes circuit breaker protection for safe operation. It suits professional mechanics and car owners needing a multi-function diagnostic probe.

Use Cases and Limitations

This tester suits technicians who need an all-in-one probe with an LCD readout and built-in flashlight for dark engine bays. The overload protection with audible warning adds safety during live-circuit work. Buyers who require AC voltage testing should look elsewhere, as the device is rated for DC use only. It also does not replace dedicated oscilloscopes or advanced ECU scanning tools for complex signal analysis.

Voltage Range Decides Fit

The single specification that decides fit is the 3.5-36V DC operating window. This range covers standard vehicle electrical systems and allows the LCD to display measured values directly on the probe. If your diagnostic work falls outside this DC voltage span, a different tester will be necessary.

How it compares

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

Price $26.99
Cheaper than about 58% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameaFe Power
Product typeClamp
More details
Team affiliation1 Piece

Questions about this item

How does the 3.5-36 V range show up on the LCD when I am probing a live circuit?

The screen displays the exact voltage present at the probe tip between 3.5 V and 36 V DC, so you can confirm power, ground or signal levels without a separate meter.

What does the DC-only specification mean for using the tester on a vehicle?

The tool is designed for DC systems only; do not connect it to AC mains or inverter outputs, and power it from the vehicle battery via the two clamps.

What do the two clamps need to attach to before the probe becomes active?

Clamp the red clip to the battery positive terminal and the black clip to the negative terminal; the probe then receives battery-referenced power for testing.

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