Details
CT100 Auto Circuit Tester with Load Test, LCD & Polarity Alerts
- Features a professional load test function (DC 5–30V, 1.2A Max)
- Hold the button for 5 seconds to check battery and circuit load capacity, quickly identifying aging batteries, weak connections, and voltage drops for faster, more accurate repairs
- Equipped with a clear backlit digital display, the CT100 measures DC voltage from 3.3–65V with 0.1V resolution (±0.1V accuracy from 3.3–60V; ±0.2V from 60–65V)
- Delivers dependable performance for both professional technicians and serious DIY users
- Dual-colour backlighting (red for positive, green for negative) and on-screen ± indicators activate instantly when the probe contacts a circuit
- Intuitive feedback helps prevent reverse connections and protects sensitive vehicle electronics during testing
- Battery-free operation eliminates maintenance and downtime while improving safety during testing
- Integrated protections include overvoltage alerts, overheating warnings, and component status monitoring for dependable performance in daily automotive diagnostic work
- Colour-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
- The 12.5-foot extra-long test cable improves access to hard-to-reach areas without repositioning the tester
- Universal 4mm banana jack connections support interchangeable probes and clips, enabling flexible testing across cars, trucks, RVs, and other vehicles
- With a 3.3–65V testing range, this versatile tester supports 12V, 24V, and 36V vehicle systems, making it ideal for cars, trucks, RVs, commercial vehicles, and more
- Perfect for checking fuses, verifying connector voltage, testing circuit integrity, tracing wiring issues, and diagnosing starting-related electrical faults