Features 1. Universal tachometer with 0-6000 RPM indicating range, high accuracy readings for maximum reliability, easy to install and operate. 2. Stepper motor drives the pointer, providing accurate engine RPM display and clear LCD time display. 3. Offers high versatility and stability, features excellent anti-fog performance, and allows convenient installation via multi-plug terminal connections. 4. Full-body IP67 waterproof design, suitable for various vehicles, yachts, boats, RVs, and motorcycle modifications. 5. Includes a detailed product manual that clearly explains installation, wiring, and operational functions to ensure proper use. Specification Condition: Item Type: Tachometer Material: Stainless Steel + Nickel-Plated ABS Size: Approx. 85mm / 3.3in Operating Current: 100mA Operating Voltage: 12V / 24V Indicating Range: 0-6000 RPM Tachometer Sensor Models: M18 x 1.5, M16 x 1.5 Input Signal: Pulse Signal from tachometer sensor, engine, alternator, ignition coil, crankshaft sensor, etc. Adjustable Speed Ratio: 1-300 Protection Class: IP67, fully waterproof Backlight: Red Display: LCD Display Motor: Stepper Motor Instructions: Before installation, drill a hole in the panel (Diameter: 85-87mm / 3.3-3.4in) and ensure at least 70mm (2.8in) of clearance behind the panel. Insert the gauge into the hole. Secure the gauge in place and tighten the back cover after positioning. Package List 1 x Tachometer 1 x Manual