85mm Waterproof Tachometer 0-3000/0-4000RPM Car Marine Tachometer Instrument Hour Meter 7 Color Backlight RPM Sensor M16/M18 RPM Meter 85MM Diesel Engine Tachometer Sensor RPM Meter RPM Counter 0-3000RPM with Digital Hour Device 7 Color Backlight Optional 12V 24V<br> Features:<br> 1. Racing appearance enhances the characteristics of your car or vehicle<br> 2. Comes with installation manual<br> 3. 7-color backlight<br> 4. High precision<br> 5. Applicable for cars, trucks, boats, diesel generator engines, and gasoline engines<br> 6. Indicating range: 0-3000RPM, 0-4000RPM, 0-6000RPM<br> Specifications:<br> Material: Stainless Steel + Nickel Plated Plastic<br> Working Voltage: 12V/24V<br> Connection: Red Battery (+9-32VDC), Blue Battery (-), Black Signal, Orange Black Light (+9-32VDC)<br> Indicating Range: 0-4000RPM, 0-3000RPM, 0-6000RPM<br> Input Signal: Pulse signal from speed sensor, engine, alternator, ignition coil, crankshaft sensor, etc.<br> Adjustable Speed Ratio: 1-300<br> Protection Level: IP67, can work up to 1 meter underwater<br> Package Includes:<br> 1 x Tachometer<br> 1 x Installation Instructions (sensor not included)<br> Sensor: M16/M18<br> Package Includes: 1 x Sensor (gauge not included)