We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Handheld red circuit probe tester with 4m coiled lead and black alligator clip

CMTOOL Power Circuit Probe Tester 6V-24V DC 4m Lead

SKU CH-CY35-K81Z2

A 6 V to 24 V DC circuit probe with a 4 m lead identifies polarity, checks continuity and activates components while built-in overload protection trips at 7 A

  • FeaturesPower circuit probe tester, Battery Powered, false
  • Weight0.331 kilograms
  • Sports Team1 Piece
  • Tests 6 V to 24 V DC systems on cars, trucks, boats, trailers and motorcycles
  • Built-in overload protection trips at 7 A with audible buzzer alert
  • Red and green LEDs instantly show positive or negative polarity
  • 4 m (13 ft) lead plus auxiliary ground clamp reaches around the vehicle
  • Activates components in or out of the circuit for quick fault finding

Automotive DC Circuit Tester 6V-24V

This power circuit probe tester diagnoses electrical systems on cars, trucks, boats, trailers and motorcycles. It identifies polarity, checks continuity and activates components with a single hand-held tool. The built-in overload protection trips at 7A and sounds a buzzer to prevent damage. It suits professional mechanics and enthusiasts who need quick fault-finding on 6V to 24V DC circuits.

4-Metre Test Lead Reach

The 13 ft extension cable lets you probe circuits far from the battery without moving the tool. An auxiliary ground clamp connects directly through the unit for a stable reference. This reach is the single specification that decides whether the tester fits your workspace and vehicle size.

Simple Hook-Up with Audible Alerts

Clip the black lead to ground, touch the stainless-steel tip to the circuit and read the red or green LED for polarity. The buzzer sounds instantly on overload or continuity, so you hear faults without watching the display. The only common mistake is forgetting to reset the internal breaker after a 7A trip before continuing tests.

Highlights

  • Tests 6 V to 24 V DC systems on cars, trucks, boats, trailers and motorcycles
  • Built-in overload protection trips at 7 A with audible buzzer alert
  • Red and green LEDs instantly show positive or negative polarity
  • 4 m (13 ft) lead plus auxiliary ground clamp reaches around the vehicle
  • Activates components in or out of the circuit for quick fault finding

Specifications

BrandCMTOOL
FeaturesPower circuit probe tester, Battery Powered, false
Weight0.331 kilograms
Sports Team1 Piece

Questions about this item

What does the 6 V to 24 V range mean when I am testing a vehicle?

It covers every common DC automotive system, so you can diagnose cars, trucks, boats, trailers and motorcycles without switching tools.

How does the overload protection work in practice?

An internal breaker trips automatically at 7 A and sounds a buzzer, preventing damage to the probe and the circuit under test.

What do I need to reach distant test points?

The kit includes a 4 m (13 ft) extension lead and an auxiliary ground clamp for mobile work around the vehicle.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.