Features: 1.Universal tachometer with 0?6000RAM indicating range, high accuracy instructions for maximum reliability, easy to drive and control. 2.Stepper motor is used to drive the pointer, provides accurate motor RPM display and clear LCD time display. 3.Features high versatility and stability, has excellent anti?fog function, convenient Installation by multi-plug terminal connecting way. 4.Whole body IP67 waterproof, suitable for all kinds of vehicle yeacht boat RV moto modification. 5.Equipped with a detailed product manual that will clearly describe the installation, wiring and use functions of the product to eliminate use disorders. Specification: Condition: 100% Brand New_x000D_ Item Type: Tachometer_x000D_ Material: Stainless Steel + Nickel-Plated ABS_x000D_ Size: Approx. 85mm/3.3in_x000D_ Operating Current: 100MA_x000D_ Operating Voltage: 12V/24_x000D_ Indicating Range: 0-6000RPM_x000D_ Tacho sensor Model :M18 x 1.5 Tacho Sensor, M16 x 1.5 Tacho Sensor _x000D_ Input Signal: Pluse Signal from tacho sensor, engine, alternator, ignition coil, crankshaft sensor, etc. _x000D_ Adjustable Speed Ratio: 1-300_x000D_ Protection Class: IP67, the whole body is completely waterproof_x000D_ Backlight: Red_x000D_ Display: LCD Display_x000D_ Motor: Stepper Motor_x000D_ Instructions:_x000D_ Before installation, firstly, you need to open a hole(Dia:85-87mm/3.3-3.4in)of the panel, make sure there is a space with (70mm/2.8in backyard of panel) as well_x000D_ Put the gauge in the hole._x000D_ Mount the gauge in hole, twist the back cover on after adjustment. Note: Each product is packaged in a hard carton, and the bubble cotton anti?drop filling will ensure that your order remains in a brand new state before receipt.