??Inductive DesignThe inductive tachometer is close to the engine spark plug wire, you can measure the speed, switch to sleep mode when not in use, and wake up to work when needed.??EASY TO USEThis Tach Gauge comes with a clip, just use the clip to hold the spark wire. Motion-sensitive design, the wire harness can operate the spark plug. The inductive tachometer is safe and reliable. The battery is easy to replace and can be used for a long time.??Zero hour automatic reset functionInductive Digital Tachometer hour meter reads up to 10,000 hours and then resets to zero, tachometer can display up to 99,999 rpm. With system data reset function.??Versatile applicationthe inductive tachometer is suitable for any two-stroke or four-stroke gasoline engine and is suitable for cart engines with a speed range above 30,000 rpm. Measuring speed range (RPM): 100RPM to 30000RPM.??With Detailed Tipswhen the engine is started, the current RPM is displayed. When the engine is off, the total run time is displayed. Use the service icon to configure programmable service times to remind you when to change oil or perform other services.