Topdon Auto Circuit Tester with Load Test, LCD, Polarity Alerts, CT100

Topdon Auto Circuit Tester with Load Test, LCD, Polarity Alerts, CT100

Diagnose electrical issues faster and with more confidence using the Topdon CT100 Auto Circuit Tester. Built for technicians, DIY mechanics, and anyone who wants reliable results, this handy tester helps you quickly check circuits, identify polarity, and perform load tests with clear feedback on an easy-to-read LCD display.

Whether you're tracking down wiring faults, testing connections, or verifying power and ground, the CT100 gives you the information you need to work smarter and save time.

Key Features

• Load Test Function – Helps verify circuit performance under load for more accurate diagnostics.
• LCD Display – Clear, convenient readout for quick interpretation while you work.
• Polarity Alerts – Instantly identify positive and negative polarity to avoid guesswork.
• Automotive Electrical Troubleshooting – Ideal for checking wiring, connections, and circuit condition.
• Compact, Practical Design – Easy to handle in the garage or on the go.

Why You'll Want It

Electrical problems can be frustrating and time-consuming. The Topdon CT100 simplifies the process by giving you fast, dependable insight into your vehicle’s circuits. That means less trial and error, quicker repairs, and more confidence every time you test.

Perfect For

• Professional auto technicians
• Home mechanics
• Garage and workshop use
• Fast electrical diagnostics on cars and other automotive systems

Get the dependable testing power you need with the Topdon Auto Circuit Tester with Load Test, LCD, Polarity Alerts, CT100—a smart addition to any diagnostic toolkit.

California Proposition 65 Warning

⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov