{"product_id":"topdon-ct100-automotive-circuit-tester-5-30v-professional-load-testing-measurement-range-3-3v-65v-accuracy-up-to-0-1v-12-5-ft-extends","title":"TOPDON CT100 Automotive Circuit Tester, 5-30V Professional Load Testing, Measurement Range: 3.3V-65V, Accuracy up to ±0.1V, 12.5 ft Extends","description":"\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Introduction:\u003c\/strong\u003e\u003c\/div\u003e\nThe CT100 is a professional automotive circuit tester built for speed and accuracy. It helps diagnose electrical issues, identifies polarity, and provides clear alerts. Built rugged with a long cable and interchangeable probe, it works on various vehicles. Fast, precise results for pros and DIYers.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Highlights:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e5-30V Professional Load Testing\u003c\/div\u003e\n\u003cdiv\u003ePolarity Detection\u003c\/div\u003e\n\u003cdiv\u003eMeasurement range: 3.3V-65V\u003c\/div\u003e\n\u003cdiv\u003eAccuracy up to ±0.1V\u003c\/div\u003e\n\u003cdiv\u003eSound Alert\u003cbr\u003e\n\u003cdiv\u003eSupported Models: Trucks, Sedans, SUVs, Motorcycle, RV\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0987\/1110\/9996\/files\/10001_64bd7c56-85ca-48df-985a-c9d79faaf513.webp?v=1785829181\" alt=\"\"\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cstrong\u003eProduct Features:\u003c\/strong\u003e\u003cbr\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eCompact, Lightweight, Easy to Use\u003c\/div\u003e\n\u003cdiv\u003eThe CT100 is compact, lightweight and easy to carry for everyday diagnostics. The 12.5-foot extended test lead gives you greater reach without constantly repositioning, while universal 4 mm banana plugs support DIY accessories and compatibility with most standard probes and clips.\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0987\/1110\/9996\/files\/10002_9b181463-f2b4-4953-ba5b-63715e51f84d.webp?v=1785829181\" alt=\"\"\u003e\u003cbr\u003eProfessional Load Test\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eThe built-in professional load test function supports DC 5–30V circuits with up to 1.2A output and activates with a simple press-and-hold operation. It monitors real-time voltage drop to help identify weak batteries, poor connections, and internal circuit faults—enabling fast, accurate, and reliable diagnostics for automotive electrical systems.\u003c\/div\u003e\n\u003cdiv\u003eDC: 5–30V  Max: 1.2A\u003c\/div\u003e\n\u003cdiv\u003ePrecise Voltage Measurement\u003c\/div\u003e\n\u003cdiv\u003eThe CT100 measures 3.3–65V DC with dependable accuracy across a broad range of automotive electrical systems. It delivers ±0.1V accuracy from 3.3–60V and ±0.2V accuracy from 60–65V, helping technicians diagnose circuits, batteries, and electrical components with greater confidence.\u003c\/div\u003e\n\u003cdiv\u003eAutomatic Polarity Identification\u003c\/div\u003e\n\u003cdiv\u003eThe CT100 automatically detects positive and negative polarity using color-coded backlight indicators(red for positive connection, green for reverse connection) and clear ± symbols on the display. This instant visual confirmation helps prevent reverse connections and protects sensitive vehicle electronics during testing.\u003c\/div\u003e\n\u003cdiv\u003eClear Digital Voltage Readout\u003c\/div\u003e\n\u003cdiv\u003eThe high-contrast digital display shows real-time voltage and polarity clearly. The 0.1V resolution readout delivers direct, accurate data at a glance for fast, intuitive diagnosis. \u003c\/div\u003e\n\u003cdiv\u003eProfessional Audible Buzzer Alerts\u003c\/div\u003e\n\u003cdiv\u003eDistinct audible alerts indicate startup status, reverse connection warnings, active load testing, and overvoltage or overheating conditions—allowing technicians to monitor circuit status without checking the display.\u003c\/div\u003e\n\u003cdiv\u003eIntuitive Status Light Indicators\u003c\/div\u003e\n\u003cdiv\u003eColor-coded backlight indicators confirm polarity instantly, while additional alerts display overvoltage (“H”), overheating (“Hot”), and lamp abnormality (“ER1”) status—keeping key operating conditions visible at a glance during testing.\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0987\/1110\/9996\/files\/10003_0e629b37-f3d3-410d-9bfd-8ec37b12537c.webp?v=1785829181\" alt=\"\"\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eBuilt for a Wide Range of Automotive Electrical Tasks\u003c\/div\u003e\n\u003cdiv\u003eTackle diverse testing and diagnostic jobs with one professional tool.\u003c\/div\u003e\n\u003cdiv\u003eDIY Automotive Enthusiasts\u003c\/div\u003e\n\u003cdiv\u003eVehicle electrical system testing, battery condition checks, circuit troubleshooting, and basic wiring diagnostics\u003c\/div\u003e\n\u003cdiv\u003eAuto Repair Shops\u003c\/div\u003e\n\u003cdiv\u003eDaily electrical inspections, load testing, fault detection, and routine vehicle maintenance support \u003c\/div\u003e\n\u003cdiv\u003eTechnical Training \u0026amp; Education\u003c\/div\u003e\n\u003cdiv\u003eCircuit principle demonstrations, polarity identification training, voltage measurement practice, and hands-on learning.\u003c\/div\u003e\n\u003cdiv\u003eProfessional Automotive Technicians\u003c\/div\u003e\n\u003cdiv\u003eOn-site vehicle fault diagnosis, fleet system maintenance, electrical verification, and in-depth circuit analysis\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0987\/1110\/9996\/files\/10004_96625757-eacd-420a-a2fe-f80157da57ae.webp?v=1785829181\" alt=\"\"\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eWhy Choose TOPDON CT100?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eProfessional Load Test with Precise Results\u003c\/div\u003e\n\u003cdiv\u003eIntelligent Audio-Visual Indicator System\u003c\/div\u003e\n\u003cdiv\u003eVersatile Compatibility \u0026amp; Extended Reach\u003cbr\u003e\u003cbr\u003e\n\u003cdiv\u003e\u003cstrong\u003ePackage includes:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e1pc x  TOPDON CT100 Main Unit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TOPDON","offers":[{"title":"Default Title","offer_id":54132842266988,"sku":"HKAD243","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/1110\/9996\/files\/10005_a95ce5eb-5a22-4e0e-af41-e39db14e1d43.webp?v=1785829181","url":"https:\/\/godiag.com\/products\/topdon-ct100-automotive-circuit-tester-5-30v-professional-load-testing-measurement-range-3-3v-65v-accuracy-up-to-0-1v-12-5-ft-extends","provider":"Godiag","version":"1.0","type":"link"}