--- product_id: 384373620 title: "Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200" brand: "topdiag" price: "$101.22" currency: USD in_stock: false category: "Top Diag" url: https://www.desertcart.us/products/384373620-power-circuit-probe-kit-breaker-finder-for-automotive-circuit-tester store_origin: US region: United States of America --- # 9-30V wide voltage range 320x240 DPI TFT color display 18A max continuous current Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 **Brand:** topdiag **Price:** $101.22 **Availability:** ❌ Out of Stock ## Summary > πŸš— Power Your Precision: The Ultimate Circuit Tester for the Modern Mechanic ## Quick Answers - **What is this?** Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 by topdiag - **How much does it cost?** $101.22 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/384373620-power-circuit-probe-kit-breaker-finder-for-automotive-circuit-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 - β€’ **Complete Kit for On-the-Go Pros:** Includes 6m test line, copper probes, relay connectors, and toolbox for ultimate convenience. - β€’ **Customizable Display & Online Upgrades:** Stay ahead with optional screen styles and seamless firmware updates. - β€’ **Pro-Grade Oscilloscope & Multimeter Combo:** Visualize and measure voltage, resistance, current, frequency with precision. - β€’ **All-in-One Automotive Diagnostic Powerhouse:** From relay to injector tests, get every circuit insight in one sleek kit. - β€’ **Smart Safety with Adjustable Circuit Breaker:** Protect your vehicle and device with intelligent overload control. ## Overview The TopDiag P200 9-30V Car Circuit Tester is a professional-grade diagnostic tool designed for 12V and 24V automotive systems. Featuring a high-resolution 320x240 TFT color display, it combines multimeter, oscilloscope, relay, injector, and diode testing functions in one compact kit. With an adjustable 0-5V power supply, intelligent circuit breaker protection, and support for online firmware upgrades, it ensures accurate, safe, and up-to-date diagnostics for cars, trucks, motorcycles, and marine vehicles. The comprehensive accessory set and robust build make it ideal for professional mechanics and serious DIYers alike. ## Description Main functions: 1. Intelligent identification of voltage / resistance 2. Multimeter mode (measuring voltage, resistance, diode, on-off, current and frequency) 3. Relay test 4. Injector test 5. Diode test 6. Oscilloscope function 7.0-5v adjustable power supply 8. Vehicle component activation 9. Positive and negative polarity test 10 intelligent circuit breaker protection (overload adjustable) 11. Screen style and background are optional 12. Online network upgrade Product specifications and parameters: β‘  Display screen: (320 * 240 DPI) TFT true color display screen β‘‘ Operating temperature: 0 - 60 Β° C (32 - 140 f Β°) β‘’ Storage temperature: 40 - 70 Β° C (- 40 - 185 f Β°) β‘£ External power supply: 12V or 24V, powered by battery β‘€ Working voltage: 9v-30v β‘₯ Measuring voltage: 10.1v-50v ⑦ Resistance measurement range: 1 ohm ~ 200K ohm ⑧ Current measurement range: 0 ~ 18a ⑨ Maximum continuous current: 18a Product packing list <1. Black cat test host 6 meters long test line <2. All copper probe <3. Double pass test connector 4. Private model alligator clip battery connecting line 5. Relay test line 6. Probe adapter 7. 25amp fuse 8. Operation instructions 9. Product toolbox Weight: 2.6kg Size: 38.5 * 29.2 * 10.7 cm ## Features - [30+ Diagnostic Car Services for Automotive System] Multiple functions - almost covering the probe tools on the market. With Circuit Breaker Finder, Multimeter function, Oscilloscope mode, Continuity testing, Relay test, Activating components in your hand, Car Battery Test, Power supply/ground detecting/open & short testing, Trailer lights testing, Signal circuit testing, Checking for Bad Ground Contacts, Clean the Injectors, 20FT cable & LED light, AC/DC voltage/resistance/diode/frequency testing. - [Multimeter & Oscilloscope Tester] The P200 Circuit tester will be the more versatile and powerful Power Circuit Probe Kit you've ever seen. Contains the multimeter's DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP) and frequency test functions, combined with the unique oscilloscope function and buzzer, can test components according to voltage, resistance value, frequency duty cycle, and waveform diagrams to quickly diagnose problems with your circuit system. - [Activating Electrical Components & 12V Battery Tester] Being able to ap-ply battery power or ground right to the probe tip gives you the ability to activate and dynamically test electrical components such as lights, motors and solenoids. 12V Battery Tester – Instantly checks battery health with 3 essential modes (Cranking Test, Charging Test & Load Test) to catch cranking failures, alternator issues, and hidden capacity loss, so you never get stranded by a dying battery. - [Smart Test & Positive & Negative Test] When connected to the probe of Car Electrical Test Tool to measure voltage, resistance, positive/negative polarity, it will automatically become an instant auto-range, intelligent judgment does not require manual selection, and the corresponding parameter values and prompts are displayed on the HD LCD screen. With a 20ft cable, you can quickly assist you in diagnosing the car's condition without opening the wiring. - [Clean the fuel injector] It is extremely important to regularly test the fuel injector. P200 provides 4 types of pulse signals (once or multiple times) combined with car cleaner to achieve maximum cleaning effect. - [Relay Test] There’s nothing worse getting stuck on the trail at night because your light relay burnt out, losing your radio in the middle of a road trip, or not being able to finish your project because you’re short one small relay. With our P200 relay test, fix your lights on the fly, and keep the road trip rocking all night long. - [Widely Application] The Topdiag P200 is essential for a range of automotive diagnostic scenarios, whether you're a professional mechanic troubleshooting complex vehicle issues or a DIY enthusiast performing routine maintenance tasks. With its versatile capabilities, it's perfect for diagnosing electrical problems, testing relays, analyzing fuel injectors, activating components, and even utilizing oscilloscope mode for advanced troubleshooting. It's a must-have tool for anyone working on automotive electrical systems - [18 Languages & Firmware Upgrade] You can choose from 18 languages.You can easily use a USB data cable to connect Circuit tester automotive to a computer to perform an online upgrade program. - [1-YEAR WARRANTY, PERFECT SERVICE] TopDiag Car circuit tester provides 1-year warranty, and supports 30 days no reason to return. If you encounter any issues during the product update, please contact us immediately. We offer 24/7 online technical support to assist you. E, MAIL: jihaotech @ outlook . com ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0912YBNQP | | Brand Name | TopDiag | | Colour | black red | | Compatible Devices | Vehicles, Vehicle Electrical Systems | | Customer Reviews | 4.4 4.4 out of 5 stars (527) | | Item Dimensions | 38.5 x 29.2 x 10.7 Centimeters | | Item Highlight | 9~30V Voltage Range, Oscilloscope Mode, Multimeter, Relay Test, Fuel Injector Tester, Activating Component | | Item Weight | 1200 Grams | | Manufacturer | TopDiag | | Maximum Operating Voltage | 30 Volts | | Measurement Type | Multimeter | | Minimum Operating Voltage | 9 Volts | | Model Number | P200 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | P200 | | Power Source Type | Battery Powered | | Specification Met | CE | | Style Name | Digital | | UPC | 791734860403 | ## Product Details - **Brand:** TopDiag - **Colour:** black red - **Item Weight:** 1200 Grams - **Power Source:** Battery Powered - **Style:** Digital ## Images ![Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 - Image 1](https://m.media-amazon.com/images/I/41sKpaal4DL.jpg) ![Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 - Image 2](https://m.media-amazon.com/images/I/51EfyclV0jL.jpg) ![Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 - Image 3](https://m.media-amazon.com/images/I/5166VyyYJzL.jpg) ![Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 - Image 4](https://m.media-amazon.com/images/I/512y38UlccL.jpg) ![Power Circuit Probe Kit, Breaker Finder for Automotive Circuit Tester, P200 - Image 5](https://m.media-amazon.com/images/I/51ntW+ORTmL.jpg) ## Questions & Answers **Q: does it check house current?** A: This is for DC current tests only which uses batteries such as boats , riding mowers and automobiles. It will do both 12 and 24 volt systems. Does not work with AC voltage or current in homes **Q: Can you check for voltage by just holding the probe against a wire or do you have to pierce the insulation on the wire?** A: You have to pierce the wire. I suggest if you do, dab a bit of silicone sealant to the hole to keep out moisture and avoid corrosion. I would also suggest getting the back probe set to avoid piercing wires if that is a concern. **Q: Does the colour of the tool refer to any differences?** A: The picture is the real color, and the product is taken in kind **Q: Does this come with extension cable?** A: If you are working on trailers or the like you will need to purchase the extension. However the cord it comes with should be long (20FT) enough to work on any part of a car or light truck that you need to access. ## Frequently Bought Together - TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode - 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 + Puller – Replacement for RV Camper Boat Truck (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/384373620-power-circuit-probe-kit-breaker-finder-for-automotive-circuit-tester](https://www.desertcart.us/products/384373620-power-circuit-probe-kit-breaker-finder-for-automotive-circuit-tester) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-14*