--- product_id: 651786588 title: "Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker" brand: "winamoo" price: "€ 41.55" currency: EUR in_stock: true reviews_count: 5 category: "Winamoo" url: https://www.desertcart.hr/products/651786588-test-light-automotive-5-90v-digital-led-circuit-tester-voltage store_origin: HR region: Croatia --- # Bidirectional LED polarity indicator 110-inch extended spring wire 3-90V wide voltage range Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker **Brand:** winamoo **Price:** € 41.55 **Availability:** ✅ In Stock ## Summary > ⚡ Diagnose Like a Pro, Drive with Confidence! ## Quick Answers - **What is this?** Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker by winamoo - **How much does it cost?** € 41.55 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/651786588-test-light-automotive-5-90v-digital-led-circuit-tester-voltage) ## Best For - winamoo enthusiasts ## Why This Product - Trusted winamoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Safe Design:** Built-in circuit chip with insulation cover ensures burn-resistant, shock-proof testing every time. - • **Instant Polarity Clarity:** Bidirectional LED lights instantly show positive (red) or negative (green) polarity—no guesswork needed. - • **Precision Voltage Readout:** Crystal-clear 0.1V resolution with ±0.2V accuracy for confident diagnostics. - • **Versatile Automotive Tool:** Perfect for cars, trucks, RVs, motorcycles—checks fuses, batteries, wiring, and more with sharp probe precision. - • **Extended Reach & Flexibility:** 110-inch anti-bend spring wire with large alligator clip for effortless one-hand operation in tight spots. ## Overview The WINAMOO Test Light Automotive Digital LED Circuit Tester offers a wide 3-90V testing range with ultra-precise 0.1V resolution and ±0.2V accuracy. Featuring a 110-inch extended spring wire and large alligator clip, it provides unmatched flexibility and ease of use. Its bidirectional LED indicators clearly display polarity, while a built-in circuit chip and insulated grip ensure safe, durable operation. Ideal for professional-grade diagnostics on cars, trucks, RVs, and motorcycles, this tool quickly identifies faults in fuses, batteries, wiring, and more—making it an essential addition to any automotive or electronics toolkit. ## Description WINAMOO Test Light Automotive with Voltage Display for Checking Car Truck RV Motorcycle Fuses & Battery Voltage3-48 V testing range, ideal for car, truck, RV, and various vehicles' electrical circuits voltage testing, also for automotive battery, battery charging systems, ignition systems, which is a must have tool for any automotive engineer, electronic engineer or circuits DIY.BIDIRECTIONAL CIRCUIT TESTLED Indicator: Green for negative polarity & Red for positive polarity.The LED voltage display is a great addition to check fuses and battery voltage easily and quickly.Specifications and Features:Voltage: DC 3-48V(+_0.2V Accuracy)Resolution: 0.1VPackage Contents: 1* Automotive Circuit Tester with Voltage DisplayHEAVY DUTY DIAGNOSTIC TOOL1. This circuit tester can be used to detect power, ground and find shorts and breaks in wires.2. Quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and moreThis auto light tester pen will save you time and speed up the job, perfect for automotive use. Review: By far the best tester for that price! Love the digital display as well! Review: works good ## Features - 【Clear Digital Display & Readouts】: WINAMOO automotive circuit tester with a highly clear LED digital backlit display for voltage readings, 0.1V resolution with ±0.2V accuracy gives you clearly visible digital readouts. Compared with LCD lights, this light tester is not affected by the brightness of light, so that be clearly read in daytime or dark areas. - 【Extended Spring Wire with Alligator Clip】: Maximum extended to 110 inch long enough spring wire increases flexibility and a wide measuring area when testing, anti-bending design of the tail wire makes no worry about bad contact of the line. Along with large size alligator clip for easy one-hand operation. - 【Bidirectional indicating light】: There is a bidirectional light emitting diode on the circuit board for polarity indication, red light indicates positive polarity & green light indicates negative polarity. You can attach the alligator clamp either to negative or positive ground, while using the probe to touch the other side. - 【Computer Save】: This premium car fuse tester has a built-in circuit board chip, safer and more durable than traditional test lights. Equipped with insulation protective cover, it provides better grip and insulation protection against electric shock. This circuit board with line protection function, which is safer and more burn-resistant. - 【Widely Use】: WINAMOO auto electric tester pen is ideal for checking various vehicles electrical circuits. Sharp long probe is used to pierce wires and reach into narrow areas, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and more, suitable for your daily use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CJFH7Y4X | | ASIN | B0CJFH7Y4X | | Batteries Included? | No | | Batteries Required? | No | | Color | black | | Customer Reviews | 4.7 4.7 out of 5 stars (681) | | Customer reviews | 4.7 4.7 out of 5 stars (681) | | Date First Available | 22 May 2024 | | Date First Available | 22 May 2024 | | Included components | As Shown | | Item Package Quantity | 1 | | Item Weight | 200 g | | Item model number | WITL109A3716 | | Item model number | WITL109A3716 | | Manufacturer | WINAMOO | | Manufacturer | WINAMOO | | Measurement Accuracy | ±0.2V | | Part number | WITL109A3716 | | Power source type | Battery Powered | | Product Dimensions | 45 x 45 x 190 cm; 200 g | | Product Dimensions | 45 x 45 x 190 cm; 200 g | | Style | Digital | ## Product Details - **Brand:** WINAMOO - **Colour:** black - **Item weight:** 200 Grams - **Power source:** Battery Powered - **Style:** Digital ## Images ![Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker - Image 1](https://m.media-amazon.com/images/I/7136eQDqXUL.jpg) ![Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker - Image 2](https://m.media-amazon.com/images/I/71wpemv8EyL.jpg) ![Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker - Image 3](https://m.media-amazon.com/images/I/71l0W8yldjL.jpg) ![Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker - Image 4](https://m.media-amazon.com/images/I/71P2ucp5ILL.jpg) ![Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker - Image 5](https://m.media-amazon.com/images/I/71KZhhdvScL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***E on 10 November 2025* By far the best tester for that price! Love the digital display as well! ### ⭐⭐⭐⭐⭐ Review *by K***H on 21 January 2026* works good ### ⭐⭐⭐⭐⭐ Review *by S***N on 8 December 2025* There are many ways to test automotive fuses, connectors, and wires, but a tool like this is the easiest that I know. I have been helping someone out with their car and had to check all of the above, plus relays. This little gem made the job go much faster. What a bargain! It works flawlessly! ## Frequently Bought Together - WINAMOO Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse Checker - JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro + 1 Puller – for RV Camper Boat Accessories (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A) - Sound Troubleshooting Automotive Relay Tester 12V Auto Relay Diagnostic Tool Small Handheld DIY Car Relay Tester with Battery Clips --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/651786588-test-light-automotive-5-90v-digital-led-circuit-tester-voltage](https://www.desertcart.hr/products/651786588-test-light-automotive-5-90v-digital-led-circuit-tester-voltage) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-24*