General description Car Universal LCD 50-9999RPM Digital Engine Tachometer is designed to measure the RPM of automobile engines. It features a high-definition LCD color screen with a sun visor for clear visibility. Technical specifications Measuring range: 50 to 9999 RPM Working voltage: DC 9-36V Frequency: 20-20kHz Operating temperature: 0 to 50°C Size: approximately 50x100x75mm Default cylinder settings: 2, 3, 4, 5, 6, 8 Compatibility and accessories Suitable for all cars, trailers, ships, excavators, construction vehicles, forklifts, etc. Package contents: 1 Tachometer, 1 Manual Usage Accurate gauge that receives signals from the alternator w terminal. High sensitivity and easy operation. Other information Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.