WINAMOO

WINAMOO Automotive Test Light with 3-48V LED Digital Voltage Display Auto Circuit Tester with Voltmeter Dual Color Polarity

563+ bought in the past month

$8.95$199.99

About this item

  • 【PRECISE READOUTS & CLEAR DIGITAL DISPLAY】Bright LED display shows highly clear readings in any lighting condition, 0.1V resolution gives you reliable indication and shows you the voltage number easily & quickly. Bidirectional light emitting diode on the circuit board for easy battery load testing, red light indicates positive polarity, green light indicates negative polarity.
  • 【QUICK DETECTION & EXTENSIVE USE】WINAMOO auto circuit tester helps you to quickly test car battery voltage and diagnoses issues in 3V-48V systems, including alternator tester functionality of car/truck/SUV/boat charging systems. Also to inspect circuit tester integrity of headlights, taillights, turn signal circuits, faulty sockets, fuse connections and more.
  • 【SHARP PROBE & ANTI-LOST PROTECTIVE SLEEVE】Sharp stainless steel probe for piercing insulation with ease, also for hard to reach tight areas. Integrated anti-lost protective sleeve to secure the probe during storage and safeguarding against damage, making sure no stab and wound and won't be lost wherever you go.
  • 【EXTENDED SPRING WIRE & LARGE ALLIGATOR CLIP】High quality 96 inch long enough spring wire increases flexibility to access across broad areas when testing. Attaching with large crocodile clip for easy single-handed operation, which is boosting the efficiency for car battery capacity checks and beyond.
  • 【ULTRA-DURABLE & SAFE CONSTRUCTION】This voltage tester pen adopts ergonomic handle for comfort and safe grip. Constructed with premium ABS body with higher transparency, shatter-proof and durable. Ensuring reliable battery meter and circuit analysis for safe operation, making them an essential tool in electrical troubleshooting.
$8.95
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Product details

BrandWINAMOO
Power SourceCorded Electric
Colorblack
Item Weight200 Grams
Item dimensions L x W x H11.1 x 4.2 x 1.4 inches

Technical specifications

brandWINAMOO
power_sourceCorded Electric
colorblack
item_weight7.1 ounces
item_dimensions_l_x_w_x_h11.1 x 4.2 x 1.4 inches
min_operating_voltage3 Volts
specification_metCE, UL
measurement_typeVoltmeter
maximum_operating_voltage48 Volts
upc633337513730
manufacturerWINAMOO
product_dimensions11.1 x 4.2 x 1.4 inches
date_first_availableJuly 3, 2024
best_sellers_rank#731 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Circuit Testers

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Customer reviews

4.71,765 ratings

Customers say

Customers find the test light to be a good quality tool that works well for testing various things, including its built-in voltage meter.

★★★★★

A rare bargain on a great tool

CustomerJanuary 7, 2026

I worked for Cummins Ct for 45 years I wish I had one then. A test light only shows if power is present. This shows if power is present and how much, it is a great bargain saves hooking up multi meter. I have told others don’t wait buy one Read more

★★★★★

Meets my requirements...

John ADecember 23, 2025

Works great! No need to drag out the multi-meter for simple automotive testing. Shows voltage up to ~40 volts DC, with green light to indicate correct current flow, or red for reverse. Has ~8 in long insulated probe, with ~3 ft spring cord with an attached alligator clip that allows a relatively large area for testing without resetting the clip. Read-out is bright and easy. Can't confirm reliability, only had it for a month, but appears to be fairly robust. Only cons, the cord while not flinmsey by any means, is not as "stretchy" as I would like, but I suspect this will clear up with use. Also the alligator clip could be larger to facilitate easier clipping to bolts for better ground,(I know, being picky). Due to being 10 - 12 inches long plus the spring cord, this tester is definitely not shirt-pocket friendly, but I would definitely recommend it. Read more

★★★★★

good item

CustomerJanuary 2, 2026

like it alot. works great. cord is nice and long also. Read more

★★★★☆

very easy to setup and install.

Danny L. BrownDecember 12, 2025

The alligator grounding clip on the end is very fragile. I had to replace with a heavy duty clip. But works very well otherwise. Read more

★★★★★

Great tool for the price!

DylanSeptember 12, 2025

I use this all the time for quick voltage checks. It's easy to read and accurate, and can be hooked to the positive or ground side of a circuit, red LED indicates power and green LED indicates ground. The clip could be better and because of it's construction it is possible for the circuit board and display to rotate inside the housing when you're trying to reposition it, but for the price this is a great voltmeter test light and I really like how the rubber cap for the probe is attached to the cord. Read more

★★★★★

Great product

ElRompeTJanuary 11, 2026

Got it fast and I worked perfectly, thanks. Read more

★★★★★

Good and tough

MatthewDecember 22, 2025

Works good and it’s tough. Been through the elements and still good. Read more

★★★★★

Good quality for the price

charles e reynolds IIIJanuary 11, 2026

Works great Read more

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