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Compact handheld probe tester with red and black body, pointed metal tip, and integrated LCD display

CMTOOL Power Circuit Probe Tester 9-30V 0.3-70V

SKU CH-DH0E-RPP2F

A portable diagnostic probe tests 9–30 V DC circuits, measures 0.3–70 V and 1–200 kΩ, detects shorts, and activates components up to 8 A

  • Team affiliation1 Piece
  • Key featuresPower Circuit Probe Kit, Ac,dc, false
  • Product weight0.1 lb (0.05 kg)
  • Diagnose circuits fast with 9-30V DC support
  • Measure voltage precisely from .3 to 70V range
  • Detect shorts quickly using 1-200K Ohm resistance tests
  • Activate components directly up to 8A output max
  • Lightweight probe at .1 pounds for easy handling

Automotive Circuit Probe Tester

The CMTOOL Power Circuit Probe Tester is a professional portable diagnostic tool designed for automotive electrical system testing and component activation. It supports DC voltage measurements from 0.3V to 70V and resistance measurements from 1 to 200K Ohm. The kit includes short-circuit detection capabilities for efficient troubleshooting. It is intended for automotive professionals, vehicle owners, and DIY enthusiasts.

Build Integration and Power Requirements

The tester operates on a 9-30V DC power source, typically connecting to a vehicle battery for supply. It features a maximum activation output of 8A, allowing direct powering of components such as fuel pumps, solenoid valves, blower motors, cooling fans, and headlights. This eliminates the need for component disassembly during verification. An auxiliary ground lead is used in voltage mode to activate and test components in place.

Measurement Range and Limitations

The tool comfortably handles DC voltage readings between .3V and 70V and resistance up to 200K Ohm for circuit continuity and fault isolation. It provides clear, actionable results for battery checks, fuse verification, ground integrity, and short-circuit pinpointing. Buyers who need AC voltage measurement or resistance readings beyond 200K Ohm will find this unit does not meet those requirements. It weighs .1 pounds for easy handling.

How it compares

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

Price $37.99
Pricier than about 61% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameCMTOOL
Size & build
Product weight0.1 lb (0.05 kg)
More details
Team affiliation1 Piece

Questions about this item

What is the maximum voltage the probe can measure before it reaches its limit?

The probe measures up to 70 V, so that is the upper boundary for any voltage reading you take.

How much heat or noise does the tool produce when it is left running during a long diagnostic session?

The unit has no fan or moving parts, so it generates no audible noise and only negligible warmth during extended use.

Which power source must already be available on the vehicle for the tester to operate?

A 9-30 V DC supply such as the vehicle battery is required to power the probe.

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