CMTOOL Automotive Electric System Tester – The ultimate diagnostic tool for fast troubleshooting in all 6V-30V vehicle electrical systems. Powered directly by the vehicle battery, it delivers quick, accurate voltage checks, cutting repair time in half. Ideal for mechanics and DIYers!
 
📌 DC Voltage Mode
Probe circuits to measure 0.1V-resolution DC voltage on LCD. Accurately detects live circuit values for quick diagnostics.
 
📌 AC Voltage Mode
Measures max/min voltage, frequency & duty cycle via probe contact. LCD displays real-time AC circuit values for precise diagnostics.
 
📌 Resistance Mode
Measures circuit resistance between probe tip & ground lead. LCD displays precise Ω values for quick continuity/diagnostic checks.
 
📌 Diode Test Mode
Verifies diode functionality & checks continuity. Instantly determines if diodes are operational or faulty.
 
📌 Current Overload Protection
Safeguards your vehicle's entire electrical circuit system with automatic shutdown during current overloads, preventing damage from front to rear.
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