AUTOOL SPT301 Car Spark Tester Automotive Diagnostic

The AUTOOL SPT301 car spark tester is designed to test spark plug performance and spark strength under simulated engine working conditions. It supports three-hole comparative testing, 200-9000 RPM adjustment, a digital RPM display, and a transparent safety cover for safer visual inspection of common crankshaft-engine and motorcycle spark plugs. SPT301 is a high-frequency spark plug tester. Read the power, protective cover, high-voltage, and maintenance notes before inserting spark plugs or starting a test. SPT301 combines three-hole comparison, adjustable simulated RPM, digital display control, long spark plug support, and a safety cover to make spark plug condition checks faster and easier to observe. SPT301 uses AC 110V / 220V input power, DC12V output, 200-9000 RPM simulated speed, and a compact 200 × 118 × 118mm body with a 500g product weight. Install the spark plugs, close the protective cover, connect power, adjust the simulated RPM, and observe the spark plug test status through the transparent cover. Key features • Three-Hole Test: The design supports testing two spark plugs plus one new plug for side-by-side comparison. • RPM Simulation: Simulated engine-speed testing up to 9000 rpm helps reveal spark behavior under more realistic conditions. • Digital RPM View: The digital screen shows simulated RPM so adjustments and comparisons are easier to track. • Product: AUTOOL SPT301 Car Spark Plug Tester • Working Principle: Digital sensing • Input Power: AC 110V / 220V ±10%