--- product_id: 441218012 title: "3-36V Automotive Circuit Tester" brand: "zktool" price: "£12.13" currency: GBP in_stock: true reviews_count: 13 category: "Zktool" url: https://www.desertcart.co.uk/products/441218012-3-36v-automotive-circuit-tester store_origin: GB region: United Kingdom --- # 3-36V wide voltage range ±0.2V accuracy LCD display LED polarity indicators 3-36V Automotive Circuit Tester **Brand:** zktool **Price:** £12.13 **Availability:** ✅ In Stock ## Summary > 🔧 Power up your diagnostics with precision and confidence! ## Quick Answers - **What is this?** 3-36V Automotive Circuit Tester by zktool - **How much does it cost?** £12.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/441218012-3-36v-automotive-circuit-tester) ## Best For - zktool enthusiasts ## Why This Product - Trusted zktool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Copper Probe:** Sharp, rust-resistant pure copper probe pierces wires effortlessly for hard-to-reach spots. - • **Precision You Can Trust:** Super clear LCD with ±0.2V accuracy ensures reliable diagnostics every time. - • **Versatile Voltage Range:** Test any 3-36V vehicle circuit with precision and ease. - • **Instant Polarity Detection:** Red and green LEDs instantly reveal battery positive or negative status—no guesswork. - • **Flexible & Secure Connections:** TPU spring wire and firm copper alligator clip offer unmatched flexibility and grip. ## Overview The ZKTOOL 3-36V Automotive Circuit Tester Pen is a compact, battery-powered voltmeter designed for professional-grade vehicle electrical testing. Featuring a wide 3-36V range, ±0.2V accurate LCD display, and dual-color LED polarity indicators, it simplifies diagnosing automotive circuits, battery polarity, and wiring faults. Its sharp pure copper probe and flexible TPU spring wire with alligator clip ensure durability and ease of use in tight spaces, making it an essential tool for millennial managers who demand efficiency and reliability in their DIY and professional automotive tasks. ## Description Product Description The circuit tester with DC 3-36V low voltage test range, designed for checking various vehicle electrical circuits, such as automobile headlights, taillights, turn signal circuit, faulty sockets, fuse connections, also useful for testing other 3-36V wiring and circuits. Clear LCD display, easy to read voltage readings. ABS material insulation body, you can work with confidence. The 3-position switch provides switching of multiple functions, from left to right are shutting down, judging the positive and negative poles of the battery, and testing the voltage. When judging the polarity of the battery, if the red LED is on, it is the positive pole of the battery; if the green LED is on, it is the negative pole of the battery. The rust-free pure copper probe has excellent electrical conductivity, fast response and accurate testing. The long probe design can complete work tasks even in a small space. The strong alligator clip can hold the battery tightly without slipping off. The TPE spring cable with excellent electrical conductivity and elasticity can be stretched when used, and can be retracted back to its original shape when stored, which is very portable. Review: Perfect item - Amazing item and great value ! Review: Did the job - Did the job ## Features - 【Wide Application】The circuit test lamp with DC 3-36V low voltage test range, designed for checking various vehicle electrical circuits, such as automobile headlights, taillights, turn signal circuit, faulty sockets, fuse connections, also useful for testing other 3-36V wiring and circuits. In addition, the battery positive or negative can also be judged by the red and green LED indicators. - 【Clear Digital Display and LED Indicators】The circuit light tester with super clear LCD display, resolution to 1V voltage reading with ±0.2V accuracy. Moreover, when judging the polarity of the power supply, the two LED indicators light up in different colors to make judgments. - 【3 position switch】The circuit light tester with a 3 position switch. The 3 gears are stopped, judge the positive and negative poles of the battery and test the voltage. When judging the positive and negative poles of the battery, the red light indicates that the power supply is positive, and the green light indicates that the power supply is negative. - 【Sharp Pure Copper Probe】The voltage tester has a pure copper probe that does not rust and conducts very well. It's sharp enough to easily pierce wires and get into tight, hard-to-reach areas. The fuselage is insulated, so you can work safely. - 【TPU Spring Wire & Alligator Clips】 The lengthened TPU spring wire can be applied to more scenes. It has more flexibility than regular yarn and is easier to organize and store. The pure copper alligator clip is very firm, does not slip, and is very convenient to use... ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09P9LGBNM | | Best Sellers Rank | 190,389 in DIY & Tools ( See Top 100 in DIY & Tools ) 231 in Circuit Testers | | Brand | ZKTOOL | | Colour | Red | | Compatible Devices | Vehicles with a voltage of 3 to 36 V | | Country Of Origin | China | | Customer Reviews | 4.3 out of 5 stars 620 Reviews | | Manufacturer | ZKTOOL | | Manufacturer Part Number | ZKEU006 | | Maximum Operating Voltage | 36 Volts | | Measurement Type | Voltmeter | | Min. Operating voltage | 3 Volts | | Minimum Operating Voltage | 3 Volts | | Model Number | 3-36V | | Power Source | Battery Powered | | Power source | Battery Powered | | Specification Met | CE marked, RoHS compliant | | Specification met | CE marked, RoHS compliant | | Style | Compact | | Style Name | Compact | | UPC | 753165245747 | | Unit Count | 1.0 count | ## Product Details - **Brand:** ZKTOOL - **Colour:** Red - **Min. Operating voltage:** 3 Volts - **Power source:** Battery Powered - **Style:** Compact ## Images ![3-36V Automotive Circuit Tester - Image 1](https://m.media-amazon.com/images/I/51tAE-5yEQL.jpg) ![3-36V Automotive Circuit Tester - Image 2](https://m.media-amazon.com/images/I/611mdwXKi+L.jpg) ![3-36V Automotive Circuit Tester - Image 3](https://m.media-amazon.com/images/I/71frnlaoxhL.jpg) ![3-36V Automotive Circuit Tester - Image 4](https://m.media-amazon.com/images/I/61z4TA30aVL.jpg) ![3-36V Automotive Circuit Tester - Image 5](https://m.media-amazon.com/images/I/61dabFaenCL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect item *by A***R on 24 March 2025* Amazing item and great value ! ### ⭐⭐⭐⭐⭐ Did the job *by J***D on 12 January 2026* Did the job ### ⭐⭐⭐⭐ Straightforward, light use test tool. *by R***N on 10 February 2025* Simple easy to use circuit/voltage tester, probably not sturdy enough for daily use but compact to use as handy occasional tool. --- ## 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.co.uk/products/441218012-3-36v-automotive-circuit-tester](https://www.desertcart.co.uk/products/441218012-3-36v-automotive-circuit-tester) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-04*