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Hand-held digital circuit tester with white backlit LCD display, acetate fibre body

JASTIND 3-48V Digital LCD Circuit Tester 140 Inch Spring Wire

SKU CH-TZS1-KRSDQ

Digital LCD circuit tester checks 3-48 V DC automotive circuits with ±0.2 V accuracy and a 140-inch spring lead

  • Key featuresBattery Powered, false
  • Product weight140 g
  • Product typeVoltmeter
  • Tests 3-48V DC circuits for automotive diagnostics
  • ±0.2V accuracy on backlit LCD for clear readings
  • Computer-safe low current draw protects sensitive electronics
  • 140-inch PU spring wire with alligator clip enables one-hand use
  • Acetate fiber body and stainless probe resist shattering

3-48 V DC circuit tester with 140 inch spring wire

The JASTIND digital LCD circuit tester measures DC voltage from 3 to 48 volts across automotive wiring, lighting circuits, fuses and battery systems. A white backlit display reads to 0.1 V with ±0.2 V accuracy while drawing minimal current to protect sensitive electronics. The acetate-fiber body and stainless probe resist shattering and reach tight spaces.

140 inch PU spring wire and alligator clip

The coiled lead stretches to 140 inches, letting one hand hold the probe while the heavy-duty alligator clip stays clamped to a ground point. This reach covers engine-bay and under-dash work without repositioning the clip, and the spring retracts for compact storage.

Check your vehicle uses 3-48 V DC systems

The tester is built for low-voltage DC circuits only; it will not read AC mains or voltages outside the stated range. Buyers needing higher-voltage measurement, AC capability or data-logging functions should select a different instrument.

How it compares

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

Price $28.99
Typical for this category: the median of 971 items is $30.99.

Specifications

Product
Brand nameJASTIND, Tianchang Zhaohong Instruments
Product typeVoltmeter
Size & build
Product weight140 g

Questions about this item

What maintenance does the stainless probe need over time?

The stainless steel probe resists corrosion; wipe it clean after each use to keep the tip sharp for reliable wire piercing.

What limits continuous use of the 140-inch spring wire?

The PU spring wire extends to 140 inches; repeated full extension can fatigue the coil, so retract it fully when finished.

How much heat does the tester produce during all-day testing?

The LCD display draws very little current and the unit stays cool; only the probe tip warms slightly when piercing live circuits.

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