The battery is easy to change: the inductive tachometer is safe and reliable. The battery is easy to change and can be used for a long time.<br /> Double button with clip: reset by pressing the RST button. The MODE button can be used to adjust the speed mode. Gauges with large LCD display, built-in battery, safe and reliable.<br /> With system data reset function: automatic zero hour reset function, hour meter reading up to 10,000 hours, then back to zero, the tachometer can display up to 99,999 rpm.<br /> Inductive design: Near the engine spark plug wire, you can measure the speed, enter sleep mode when not in use, and wake up to work when needed.<br /> /> Wide range of applications: suitable for any 2-stroke or 4-stroke gasoline engine, suitable for trolley engines in the speed range above 25,000 rpm. Measuring revolution range (RPM): 100RPM to 30000RPM.<br /> Measuring methods:<br /> 1. Place the handheld meter 3-5cm away from the spark plug wire, then test.<br /> 2 .After installing one end of the electronic wire into the hole of the electronic clock body, use a metal clip to attach it to the spark plug wire jacket for induction measurement.<br /> <br /> <br /> Product Features:<br /> 1. New high quality instruments and large LCD instruments<br /> 2. Suitable for car engines in the speed range above 25,000 rpm <br /> <br /> <br /> Specification:<br /> Material: ABS<br /> Size: 46*57（mm）<br /> <br /> Color: Black<br /> Features: Digital engine tachometer<br /> <br /> <br /> Package including<br /> 1 * digital tachometer<br />ladacea