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WINAMOO 5-90V digital LED circuit tester pen with 110in spring wire and alligator clip

WINAMOO 5-90V Digital LED Circuit Tester with 110in Spring Wire

SKU CH-59KE-MWSQX

A digital LED circuit tester measuring 5–90 V with 0.1 V resolution and ±0.2 V accuracy, 110 in spring wire and alligator clip for automotive fuse checks

  • Key featuresAs Shown, Ul 61010-1, Ce Marked, Battery Powered, false
  • Overall height45 L x 45 W x 190 H centimeters
  • Overall width45 L x 45 W x 190 H centimeters
  • Overall length45 L x 45 W x 190 H centimeters
  • Product weight200 g
  • Product typeVoltmeter
  • Clear digital readouts in any light with 0.1 V resolution and ±0.2 V accuracy
  • 110 inch spring wire extends reach for flexible one-hand testing
  • Bidirectional LED shows polarity instantly with red for positive and green for negative
  • Built-in chip and insulated sleeve protect against shock and burn hazards
  • UL 61010-1 and CE marked for verified safety compliance

5-90V Digital LED Circuit Tester

The WINAMOO 5-90V Digital LED Circuit Tester is a new electrical system tool for automotive voltage testing. It combines a digital LED display with a bidirectional LED indicator and an extended spring wire. The probe includes an alligator clip for secure grounding during measurements.

Who This Suits and Who Should Look Elsewhere

This tester suits technicians and DIY owners who need clear voltage readouts on low-voltage vehicle circuits. It is not for users who require measurements below 5 V or above 90 V, or who need a true RMS multimeter for complex diagnostics.

The Specification That Decides Fit

The operating range is 5-90 V with a 0.1 V resolution and ±0.2 V accuracy. The spring wire extends to 110 in and the unit weighs 200 g. If your work demands a wider range or higher precision, choose a different instrument.

How it compares

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

Price $19.99
Cheaper than about 80% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameWINAMOO
Product typeVoltmeter
Size & build
Overall height45 L x 45 W x 190 H centimeters
Overall width45 L x 45 W x 190 H centimeters
Overall length45 L x 45 W x 190 H centimeters
Product weight200 g

Questions about this item

How much space does the 190 mm long tester and its 110 inch spring wire need in a tool bag?

The tester body measures 190 mm in length and weighs 200 g; the spring wire stretches to 110 inches, so allow a compartment at least that long when coiled.

What is the correct way to connect the alligator clip and probe for bidirectional testing, and what mistake should I avoid?

Clamp the alligator clip to either ground point, then touch the probe to the opposite side; the red LED shows positive polarity and the green LED shows negative — do not reverse the clip and probe expecting the same indication.

Which user-replaceable part powers the digital display and what voltage range does it support?

The unit is battery powered and reads from 5 V to 90 V with 0.1 V resolution and ±0.2 V accuracy; replace the internal battery when the display dims or fails to light.

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