--- product_id: 63151816 title: "allsun EM287 Automotive Circuit Tester, 2-24V LED, 16.4 ft Cable | Find Shorts, Bad Grounds And Continuity Faults, Then Activate Compatible Components With Positive Or Negative Power" brand: "allsun" price: "$59.12" currency: USD in_stock: true reviews_count: 13 category: "Allsun" url: https://www.desertcart.us/products/63151816-allsun-em287-automotive-circuit-tester-2-24v-led-16-4 store_origin: US region: United States of America --- # 2-24V digital voltage range 5m heavy-duty cable length 8A overload protection allsun EM287 Automotive Circuit Tester, 2-24V LED, 16.4 ft Cable | Find Shorts, Bad Grounds And Continuity Faults, Then Activate Compatible Components With Positive Or Negative Power **Brand:** allsun **Price:** $59.12 **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose like a pro, fix like a boss! ## Quick Answers - **What is this?** allsun EM287 Automotive Circuit Tester, 2-24V LED, 16.4 ft Cable | Find Shorts, Bad Grounds And Continuity Faults, Then Activate Compatible Components With Positive Or Negative Power by allsun - **How much does it cost?** $59.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/63151816-allsun-em287-automotive-circuit-tester-2-24v-led-16-4) ## Best For - allsun enthusiasts ## Why This Product - Trusted allsun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready-to-Go Pro Kit:** Includes 5m cable, sharp probe tip, strong alligator clips & ground lead—DIY diagnostics made effortless. - • **Instant Fault Finder:** Pinpoint shorts, bad grounds & broken wires in seconds with LED & buzzer alerts. - • **Built-in Safety First:** Overload protection and automatic circuit breaker safeguard your vehicle’s ECU and tester. - • **Precision Voltage Display:** Clear LCD shows exact voltage (2-24V) plus red/green polarity LEDs for foolproof connections. - • **Component Activation & Continuity Test:** Power fuel pumps, lights & motors directly from probe; auxiliary ground lead included. ## Overview The allsun Automotive Electrical Tester EM287 is a professional-grade digital circuit tester designed for quick and accurate automotive electrical diagnostics. Featuring a 2-24V voltage range with a clear LCD readout, polarity indicators, and a 5-meter heavy-duty cable, it enables efficient fault detection and component testing. Built-in overload protection and an automatic circuit breaker ensure safety for both the vehicle and the tester. Perfect for DIY enthusiasts and professionals seeking fast, reliable electrical troubleshooting. ## Description DIY Tool Visit the Store DIY Tool Visit the Store Ultrasonic Leak Detector Visit the Store Ultrasonic Leak Detector Based on ISO9001 International Quality System, most products are exported to Europe and USA with approvals of CE, UL, GS, CMC. We have wide product range to meet different purchased requirements. The main products contain Digital Multimeters, Metal Detectors, Ultrasonic Measures, Infrared testers.One-stop style make purchase easy,and greatly reduce purchase cost,shorten purchase time and assure purchase quality control. Based on ISO9001 International Quality System, most products are exported to Europe and USA with approvals of CE, UL, GS, CMC. We have wide product range to meet different purchased requirements. The main products contain Digital Multimeters, Metal Detectors, Ultrasonic Measures, Infrared testers.One-stop style make purchase easy,and greatly reduce purchase cost,shorten purchase time and assure purchase quality control. Metal Detector Visit the Store Metal Detector Review: Definitely a great automotive tester - This circuit tester is so easy to use you just hook onto the battery and start checking for voltage. It also saves a lot of time because you can also test whatever you are checking with the switch on the side of the probe. It is very easy and has a great amount of length in the cable so you can reach the entire vehicle or whatever you were testing. Review: Great tester for Marine use - If you have a boat, at some point you'll need to make repairs yourself as the cost of marine repairs is high. Many issues onboard are pumps and motors that fail. Sometimes its the part and sometimes its an electrical connection. This tool easily helps you determine quickly which of these it is. The wire length is perfect for my application and I can see exactly how many volts my equipment is receiving. ## Features - 【FIND ELECTRICAL FAULTS IN SECONDS】 Say goodbye to complicated multimeters! This circuit tester quickly pinpoints short circuits, bad grounds, and broken wires with clear LED lights and buzzer alarm, saving you hours of diagnostic time. - 【DIGITAL VOLTAGE READOUT & POLARITY CHECK】 Features a clear LCD screen to display exact voltage (2-24V) and Red/Green LEDs for instant positive/negative polarity identification. Ensure correct connections every time. - 【ACTIVATE COMPONENTS & TEST CONTINUITY】 Safely power up fuel pumps, lights, solenoids, and motors directly from the probe. The included auxiliary ground lead makes continuity testing a breeze. - 【BUILT-IN SAFEGUARDS FOR PEACE OF MIND】 Equipped with overload protection (8A) and an automatic circuit breaker to prevent damage to your vehicle's ECU or the tester itself, even if you accidentally short it. - 【EVERYTHING YOU NEED IN ONE KIT】 Includes a long 5-meter (16.4 ft) heavy-duty cable, strong alligator clips, a sharp probing tip, and an auxiliary ground lead. Ready to use right out of the box. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B079ZRQRJR | | Best Sellers Rank | #159,119 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #233 in Circuit Testers | | Brand | allsun | | Brand Name | allsun | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 2,308 Reviews | | Item Dimensions | 10.79 x 2.09 x 1.65 inches | | Item dimensions L x W x H | 10.79 x 2.09 x 1.65 inches | | Manufacturer | Zhang Zhou Shi Xiang Cheng Qu Hai Mao Dian Zi Ke Ji co., LTD | | Measurement Type | Voltmeter | | Min. Operating Voltage | 2 Volts (DC) | | Minimum Operating Voltage | 2 Volts (DC) | | Model | EM287 | | Part Number | allsunEM287 | | Power Source | Battery Powered,electric | | Specification Met | Em287 | | Style | Automotive Electrical Circuit Tester | | Style Name | Automotive Electrical Circuit Tester | | UPC | 788537552338 | | Upper Temperature Rating | 125 Degrees Celsius | ## Product Details - **Brand:** allsun - **Color:** Black - **Item dimensions L x W x H:** 10.79 x 2.09 x 1.65 inches - **Power Source:** Battery Powered,electric - **Style:** Automotive Electrical Circuit Tester ## Images ![allsun EM287 Automotive Circuit Tester, 2-24V LED, 16.4 ft Cable | Find Shorts, Bad Grounds And Continuity Faults, Then Activate Compatible Components With Positive Or Negative Power - Image 1](https://m.media-amazon.com/images/I/61uUtQ+MiXL.jpg) ## Questions & Answers **Q: Does this work to find where the short is or just tells you what wire is shorting out** A: The power probe circuit tester has short-circuit protected and can test for bad ground contacts instantly. It allows you to follow and locate short circuits. **Q: Does the EM285 come with a power port (cigarette lighter) connector?** A: No, it does not. Please note that the tester can deliver or sink up to 8A. That is a lot for a cigarette lighter adapter. **Q: Where is this product manufactured?** A: We are manufacturer, from China. **Q: Does it come with the probe?** A: Hi Yes, the pen probe tester come with the probe. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Definitely a great automotive tester *by A***N on April 2, 2026* This circuit tester is so easy to use you just hook onto the battery and start checking for voltage. It also saves a lot of time because you can also test whatever you are checking with the switch on the side of the probe. It is very easy and has a great amount of length in the cable so you can reach the entire vehicle or whatever you were testing. ### ⭐⭐⭐⭐⭐ Great tester for Marine use *by E***B on October 27, 2025* If you have a boat, at some point you'll need to make repairs yourself as the cost of marine repairs is high. Many issues onboard are pumps and motors that fail. Sometimes its the part and sometimes its an electrical connection. This tool easily helps you determine quickly which of these it is. The wire length is perfect for my application and I can see exactly how many volts my equipment is receiving. ### ⭐⭐⭐⭐⭐ allsun Automotive Electrical Tester with Voltage Display, 2-24V Digital Circuit Test Tool, *by M***M on May 30, 2026* It's well made, but it's a bit difficult to get used to because it shows a fixed voltage. But it's a matter of time. ## Frequently Bought Together - allsun Automotive Circuit Tester 2-24V DC, Power Circuit Probe Tester, Test Light for Car Electrical Systems,Diagnose Short Circuits/Locate Bad Grounds/Check Polarity,Cable Length About 5M - allsun em415Pro Automotive Circuit Tester,Short Open Finder Electrical Wire Breaker Tracker,Broken Wire Detector Tool,Cable Fault Locator with Bendable Receiver Probe, DC 6-42V - GTC063 Fuse Socket Connector Kit by GTC, General Technologies Corp --- ## 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.us/products/63151816-allsun-em287-automotive-circuit-tester-2-24v-led-16-4](https://www.desertcart.us/products/63151816-allsun-em287-automotive-circuit-tester-2-24v-led-16-4) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-29*