Engine tachometer, inductive speedometer for gasoline engine, racing tachometer for car

General Description This LCD digital tachometer is designed for all spark-ignition gasoline engines and supports adjustable speed modes for both 2-stroke and 4-stroke engines. Operating by induction, simply wrap the induction ring around the spark plug to activate it. Powered by a built-in CR2450 battery (3.0V DC), it features a clear LCD display. Made of durable plastic, it is compact, easy to install, and convenient for detecting and monitoring engine speed. Product Specifications and Attributes Display Type: Liquid Crystal LCD Display Compatible Engine: 2-stroke/4-stroke gasoline engine with spark plug Power Supply: Built-in CR2450 battery, 3.0V DC Material: Plastic Operation: Induction Instructions Properly wrap the tachometer's induction ring around the engine's spark plug, turn on the device, and select the corresponding 2-stroke or 4-stroke mode. The LCD will automatically display the engine speed in real time. Note: A 1-2 cm error may occur due to manual measurement. There may be a slight color difference between the image and the actual product due to differences in monitor displays. Package Contents: 1 x Engine Tachometer