- Simultaneous Dual-Hole Testing : Save time and improve efficiency with a spark plug tester that allows you to test two spark plugs at once. By comparing the spark intensity, you can accurately assess the quality of each plug to ensure optimal engine performance. - Adjustable Working Frequency (0 to 6000 RPM) : This tester simulates engine operation with an adjustable frequency range of 0 to 6000 RPM. Higher frequencies create stronger spark intensities, enabling precise testing for different spark plug types. - User-Friendly Design : Simply insert the spark plug into the test hole, secure the protective cover, connect it to a power supply, and set your desired frequency. A built-in high voltage indicator light lets you monitor the spark plug's testing status easily. - Durable ABS Material with Protective Cover : Constructed from moisture-proof and high-temperature resistant ABS material, this spark tester is built for longevity. The transparent protective cover not only enhances safety by shielding users during testing but also allows for real-time observation of the spark plug performance. Applications : - Ideal for automotive technicians needing quick diagnostics to ensure spark plug efficiency. - Great for DIY enthusiasts wanting to troubleshoot spark plug issues at home, enhancing vehicle reliability. - Useful in performance tuning for racing applications where precise spark plug performance is crucial. Get reliable spark plug performance with our advanced spark plug tester, designed for durability and efficiency.