Car Spark Plug Tester Ignition 12V Gasoline Tools Automotive Diagnostic Double Hole Analyzer

Feature: Car Spark Plug Tester Plug Analyze w/ Adjustable Dual Hole Ignition Detector Design to test spark plug performance and ignition strength With two testing holes, you can test two spark plugs Apply with 12V Gasoline vehicles car spark plugs Plug and play, convenient and asy to use Power Adapter: Input 100-240V AC, Output 12V 1A DC Dimension: Approx.145*85*60mm Attentions: 1. Please turn off power before placing spark plug. 2. Do NOT touch spark plug by hand at work to avoid danger. How to use: 1. Place the Spark Plug into tester hole 1 or 2; 2. Connect to power supply; 3. Turn the key switch 4 clockwise to turn on, indicator 3 light up, tester is now working at 1000rpm/min; 4. Turn the key switch 4 clockwise again to adjust the working frequency between 1000rpm to 6000rpm/min; 5. The higher the frequency is, the stronger the spark strength is. Package Included: 1 X Spark Plug Tester 1 X Power Adapter