Engine Performance : Diagnose and optimize engine performance with our advanced spark plug tester, ensuring your vehicle runs smoothly. Adjustable Working Frequency : Simulate engine conditions with adjustable frequency, ideal for comprehensive spark plug evaluation. Broad Compatibility : Suited for 12V gasoline vehicles, this tester works across numerous vehicle types, enhancing usability. Plug and Play : Quick setup and easy operation make it accessible for both professionals and DIY enthusiasts. Safety First Design : A protective cover safeguards users during testing, prioritizing safety without compromising efficiency. Revolutionize your maintenance routine with our versatile spark plug tester. Designed for effortless use, it combines advanced diagnostic capabilities with user-friendly features. Its compatibility with 12V gasoline engines ensures universal application, while the protective cover adds an extra layer of safety to your testing procedures.