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A pen-shaped automotive circuit tester with LED digital display, red and green polarity indicators

VKQTS 5-90V Automotive Digital Test Light LED Voltmeter Circuit Tester Pen

SKU CH-ND6P-WEXZJ

Digital circuit tester with LED voltmeter display measuring 5-90V DC to 0.1V accuracy, red/green polarity indicators, and extendable spring wire reaching 23.62-70.87 inches

  • Team affiliation1 Piece
  • Key featuresAutomotive Circuit Tester Pen*1, Circuit Tester, DC
  • Overall height29.92 L x 0.95 W x 0.95 H inches
  • Overall width29.92 L x 0.95 W x 0.95 H inches
  • Overall length29.92 L x 0.95 W x 0.95 H inches
  • Product weight1 oz
  • Accurate voltage readings with 0.1V resolution across 5-90V range
  • Instant polarity identification via red positive and green negative LEDs
  • Flexible reach with spring wire extending from 23.62 to 70.87 inches
  • Quick circuit connection using pointed probe and protected alligator clip
  • Versatile automotive testing for cars SUVs trucks and various electrical components

VKQTS 5-90V LED Voltmeter Circuit Tester

This VKQTS tester combines a pointed probe with an LED digital display that shows detected voltage to 0.1V across a 5-90V range. Red and green LEDs indicate positive or negative polarity for safer circuit checks. A stretchable spring wire extends from 23.62 to 70.87 inches for flexible reach. Strong alligator clips with a protective sleeve complete the connection.

Automotive technicians

Suits users who need a direct voltage reading and polarity indication when checking headlights, taillights, fuses, sockets or broken wires in cars, SUVs and trucks. Not for technicians who require AC voltage measurement or data logging capabilities. Buyers needing a non-contact tester or continuity-only probe should look elsewhere.

5-90V DC measurement range with 0.1V resolution

The single specification that decides fit is the DC voltage window of 5-90V displayed to one decimal place. Circuits below 5V or above 90V fall outside the readable range, so the tool cannot confirm their state. Verify that the systems you test operate within this span before purchasing.

How it compares

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

Price $14.99
Cheaper than about 92% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameVKQTS
Size & build
Overall height29.92 L x 0.95 W x 0.95 H inches
Overall width29.92 L x 0.95 W x 0.95 H inches
Overall length29.92 L x 0.95 W x 0.95 H inches
Product weight1 oz
More details
Team affiliation1 Piece

Questions about this item

What voltage source do I need to power the VKQTS tester's LED display?

The tester operates from the circuit under test across a 5-90V DC range, so the vehicle battery or supply being probed powers the display directly.

Can the extendable spring wire reach the fuse box while the alligator clip stays on the battery in the engine bay?

Yes, the spring wire stretches from 23.62 to 70.87 inches, allowing the probe to reach interior fuse boxes while the clip remains on the under-bonnet battery.

How do I confirm the tester is reading correctly after I clip it on?

The LED display shows the measured voltage to 0.1V resolution, and the red or green indicator lights to confirm positive or negative polarity on the circuit.

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