Versatile functionality: can test a range of circuits such as car batteries and generators, increasing its versatility. Includes wire tester and coil tester. Precision measurement: accurately measures the voltage of car spark plugs, helping maintain optimal engine performance. Also functions as a spark plug tester and automotive circuit tester. Easy to use: features a user friendly interface designed for users without technical background. Includes spark tester for cars and ignition cable tester. Durable and reliable: built from robust materials to deliver long lasting performance and resistance to damage. Functions as a spark tester and fuse tester. Use scenarios: - Home auto maintenance: test car battery voltage, ignition system and spark plug voltage to diagnose misfires or starting issues. - Workshop diagnostics: quickly verify ignition cables, spark plugs, and general electrical circuits during tune ups. - Generator and power equipment maintenance: assess battery connections and generator circuits to ensure reliable operation during outages.