--- product_id: 374879166 title: "P100 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit for Vehicle Trailer Truck Motorcycle Boat" brand: "topdiag" price: "515.29 DT" currency: TND in_stock: true reviews_count: 5 category: "Top Diag" url: https://www.desertcart.tn/products/374879166-p100-automotive-circuit-tester-12v-24v-power-circuit-probe-tester store_origin: TN region: Tunisia --- # 9V-70V wide voltage range AC/DC voltage & polarity detection 20ft extension cable for versatile testing P100 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit for Vehicle Trailer Truck Motorcycle Boat **Brand:** topdiag **Price:** 515.29 DT **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose like a pro, drive with confidence! ## Quick Answers - **What is this?** P100 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit for Vehicle Trailer Truck Motorcycle Boat by topdiag - **How much does it cost?** 515.29 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/374879166-p100-automotive-circuit-tester-12v-24v-power-circuit-probe-tester) ## Best For - topdiag enthusiasts ## Why This Product - Trusted topdiag brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety-First Design:** Built-in auto circuit breaker and reverse polarity protection keep you and your vehicle safe. - • **Extended Reach Power:** 20ft extension cable lets you confidently test trailers, trucks, and hard-to-reach vehicle circuits. - • **User-Friendly Pro Tool:** Intuitive LCD display and multi-language support make complex diagnostics effortless—even for beginners. - • **Precision Voltage Mastery:** Accurately tests 12V cars & 24V trucks with minimal deviation for reliable diagnostics. - • **All-in-One Circuit Detective:** Seamlessly detects voltage, resistance, continuity, shorts, and component activation in one tool. ## Overview The TopDiag P100 Automotive Circuit Tester is a professional-grade diagnostic tool designed for 12V and 24V vehicles, including cars, trucks, trailers, motorcycles, and boats. It offers precise AC/DC voltage, resistance, and continuity testing with a wide 9V-70V input range. Equipped with a 20ft extension cable and safety features like an auto circuit breaker and reverse polarity protection, it ensures safe, accurate, and versatile electrical troubleshooting. Its user-friendly interface and multi-language support make it ideal for both seasoned mechanics and DIY enthusiasts. ## Description 1. Voltage and polarity test-quickly determine DC/AC voltage and positive/negative. 2. Resistance continuity test-LCD screen displays the resistance value. 3. AC circuit signal test-quickly solve the sensor circuit problem. 4. The activation of the component in your hands, on the vehicle or on the ground. 5. Testing trailer lights and connecting 10M extension cables allows you to test cars or trucks. 6. Check for bad grounding and find short circuit Review: 12v tester - Works well and saved me a lot oftime Review: good product. - good for looking shorts or relays not working. ## Features - The Main Function : The P100 Power Circuit Probe Kit is mainly used to test car battery voltage, AC and DC voltage test, resistance, leakage, short circuit, component activation overload protection and other car circuit system problems. Auto circuit tester with large battery clip, can carry more load. Support wide input voltage range from 9V to 70V, also support 12V cars and 24V trucks. - Working Modes & Easy to Diagnose : Easy to navigate user menu allows reading DC Voltage, AC voltage, Resistance and Diode parameters very clear. A quick self-testing is a must before to test a circuit or component, ensure your tool is in excellent condition. - Accurate Data & Safety Design : Tiny deviation and more precise testing data. The circuit tester automotive can use this unit to yze any range from 9V to 70V batteries healthy, tells you everything about the battery. The circuit probe kit can protect the circuit when power supply is reversed. - Features : The automotive circuit tester with 20Ft extension cable, environmental protection material, Not pungent.low power consumption, high performance. Durable and Safety - An auto circuit breaker makes this tool very safe and sustainable ,even a beginner can easily use this automotive diagnostic test tool without the manual. - Widely Applicable . Wide range applications,professional diagnosis, support Multi-languages.The P100 Automotive Circuit Tester can be used as electrical tester, breaker finder, power tester, wire tester, car fuse tester, continuity tester, Short Finder, automotive multimeter, etc..7/24 Services （When you receive the Automotive Power Circuit Probe Tester, you must tear off the screen protective film, because it is not easy to find, you must look for it carefully）About Services: If you have any question about the car series and communication protocol, please send an E- mail to us, we will check it for you and reply you within 24 hours. Please send VIN to Topdiag006 @ outlook . com to check compatibility. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07YC621J9 | | Best Sellers Rank | #31,480 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #42 in Circuit Testers | | Brand | TopDiag | | Brand Name | TopDiag | | Color | Black | | Colour | Black | | Compatible Devices | Vehicles (12V cars, 24V trucks, trailers) and their electrical components | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 637 Reviews | | Included Components | 1*P100 | | Item Dimensions | 15.2 x 6.1 x 3 centimeters | | Item Weight | 1.9 Pounds | | Item dimensions L x W x H | 15.2 x 6.1 x 3 centimeters | | Item weight | 1.9 Pounds | | Manufacturer | TopDiag | | Maximum Operating Voltage | 70 Volts | | Measurement Type | Ammeter, Multimeter, Ohmmeter, Voltmeter | | Minimum Operating Voltage | 9 Volts (DC) | | Model | P100 | | Number of Items | 1 | | Part Number | TopDiag | | Power Source | Battery Powered | | Power source | Battery Powered | | Specification Met | CE | | Style | P100 | | Style Name | P100 | | UPC | 791276754598 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 110 Degrees Celsius | ## Product Details - **Brand:** TopDiag - **Colour:** Black - **Item weight:** 1.9 Pounds - **Power source:** Battery Powered - **Style:** P100 ## Images ![P100 Automotive Circuit Tester 12V 24V Power Circuit Probe Tester, Car Electrical Test Tool Kit AC DC Digital Voltage Tester, Auto Diagnostic Kit for Vehicle Trailer Truck Motorcycle Boat - Image 1](https://m.media-amazon.com/images/I/71ZNSnhZafL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 12v tester *by G***E on 3 April 2024* Works well and saved me a lot oftime ### ⭐⭐⭐⭐⭐ good product. *by I***I on 1 August 2020* good for looking shorts or relays not working. ### ⭐⭐⭐⭐⭐ Recomienda ampliamente *by A***A on 8 October 2025* Buena calidad de construcción, durable, fácil de manejar, preciso y con los accesorios incluidos la hacen una herramienta muy competitiva en el mercado ## Frequently Bought Together - Circuit Tester Automotive, Power Circuit Probe Tester, Circuit Breaker Finder, Test Light Automotive with 40FT Cable, Car Fuse Tester, AC DC 12V 24V Car Diagnostic Tool, Topdiag P100 - WINAMOO Automotive Test Light with 3-48V LED Digital Voltage Display, Auto Circuit Tester with Voltmeter & Dual Color Polarity Indicate, Electric Test Pen w/Stainless Probe for Car/Truck/SUV Checker - JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro Fuse + 1 Puller – for Car/RV/Truck/Motorcycle(2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A) --- ## 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.tn/products/374879166-p100-automotive-circuit-tester-12v-24v-power-circuit-probe-tester](https://www.desertcart.tn/products/374879166-p100-automotive-circuit-tester-12v-24v-power-circuit-probe-tester) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-18*