- Easy to use: requires minimal effort. Simply connect the tester to the spark plug coil to perform an instant status check for quick diagnosis. - Accurate readings: provides precise measurements of spark plug voltage, helping maintain optimal engine performance and prevent potential problems. - Versatile application: suitable for testing car spark plugs and other electrical devices, making it a useful addition to any mechanic or electrician toolkit. - Portable and ready: compact, lightweight design fits easily in a toolbox or bag and is ready to use anytime. Typical uses and applications: - In-vehicle diagnostics: quick ignition system checks during routine maintenance to identify misfires or weak sparks and guide repairs. - Small engine service: test spark plugs and ignition coils on lawn mowers, motorcycles, snow blowers, and other small equipment to ensure reliable starting and running. - Electrical device testing: troubleshoot other electrical components and ignition-related circuits in workshops or field service to verify voltage and function.