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WUQ circuit probe tester with 20FT extension wire

WUQ

WUQ Multifunctional Power Circuit Probe Tester 12V-40V 20FT

SKU CH-F3S2-XNYPW

Tests DC voltage from 12V to 40V and performs grounding, continuity, short-circuit, relay and fuel-injector checks with a 20FT extension lead

  • Product typeTest Instrument & Gauge Parts
  • Tests DC voltage from 12V to 40V for automotive and household diagnostics
  • 20FT extension wire reaches confined engine bays and dash areas
  • Grounding, continuity and short-circuit checks in one handheld probe
  • Activates relays and components directly to verify operation
  • Detects fuel injector signals for engine performance troubleshooting

Multifunctional Circuit Probe 12V–40V

This tester combines DC voltage measurement, grounding checks, component activation, short-circuit positioning and continuity testing in one handheld tool. It suits automotive technicians and DIY users who need a single instrument for multiple electrical diagnostics on vehicle or low-voltage systems.

DC Voltage Range 12V to 40V

The probe operates only within a 12V to 40V DC window, so it cannot be used on higher-voltage mains circuits or on systems below 12V. Readings are limited to this band, and the tool provides no AC measurement or data-logging capability.

20FT Extension Wire Replaces Short Leads

The 20FT extension wire replaces short factory leads that restrict movement around engine bays or under dashboards. The extra reach is worth it when access points are far from the battery or ground point, but it adds bulk for bench-only work.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $108.99
Pricier than about 65% of the 3,030 comparable items (median $54.99).

Specifications

Product
Product typeTest Instrument & Gauge Parts

Questions about this item

Should I pick a different voltage range or cable length for this tester?

This model covers DC voltage from 12V to 40V and comes with a 20FT extension wire; no other ranges or lengths are offered.

What does the 12V-40V range cover in actual use?

It lets you check automotive and light-industrial circuits, verify ground paths, activate components, locate shorts and test continuity within that voltage window.

How does the probe connect and what limits apply?

The probe uses a 20FT extension wire with a clip for ground and a tip for probing; it is limited to DC circuits between 12V and 40V.

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