Feature 1High Strength: This tester is used to test the performance and strength of spark plugs at a frequency of up to 9000 rpm. The higher the frequency, the stronger intensity of the spark plug. 25 Hole Design: This tester can also simulate real speed and digital control for five holes at the same time, thus greatly improving the accuracy and efficiency of the test. 3Wide Compatibility: Automotive spark plug tester also has a wide range of compatibility. It is suitable for testing all crankshaft engines and motorcycle spark plugs. 4Plug and Play: Confirms the standard test position and creates a clear contrast with the spark plug under test. Plug and play, easy to operate, connect and test. 5Digital Display: Spark plug analyzer with digital screen display, more convenient for you to compare and provide more accurate control.Item Type:CarSparkPlugTesterMaterial: ABS + metal alloyTest Hole: 5Input Power: US Plug 110-240VOutput Power: DC12V2 1A;Analog RPM: 0-9999 RPM;Ambient Temperature: 0-+45Relative Humidity: < 85%;Main Features.1: Working frequency up to 9000 rpm, the higher the frequency, the higher the intensity of the spark plug;2: Digital display screen, more accurate regulation;3: Simultaneous comparison of five holes, to improve efficiency;4: Simulation of the real speed, high accuracy;5: Easy to operate, plug and play; .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x CarSparkPlugTester1 x Charger1 x ManualNote1. Do not unplug the spark plug with electricity, if you want to insert or remove it, you must first turn off the power;2. Spark plugs work, the voltage reaches tens of thousands of volts, do not touch with your hands, so as not to cause injury to the body;