Marine Dash Instrument Panel Engine Speed Oil Level Pressure Water Temp Time Display with Low Voltage Alarm Red Backlights 12V Item Type: Marine Engine Instrument PanelMaterial: Aluminum alloy + ABS + stainless steel + tempered glass Function Display: 85mm Speedometer Display: Driving speed range of 0-200km/h, engine speed range of 0-8000RPM, and lights and turn signals remind; 52mm Water Temperature Gauge: Water temperature: 100-250℉ (40-120 ℃); (Input signal: 301~22ohms) 52mm Oil Level Gauge: Oil volume of the oil tank: F-1/2-E; (Input line: 0-190ohms) 52mm Oil Pressure Gauge: Oil pressure of the oil tank: 0-10Bar (0~145psi); (Input signal: 10~184ohms) 52mm Clock: Time: 1-12; Operation Mode: LCD display, stepper motor Working Voltage: DC12V circuit system or DC24V circuit system Working Current: ≤ 100 MA Working Temperature: - 30 ℃~+75 ℃ Storage Temperature: - 40 ℃~+85 ℃ Backlight Color: Red Protection Grade: IP67, can work at 1m underwater, excellent anti fog function; Application: Can be used in the fields of engine, generator set, RV, yacht, fishing boat, ship, engineering machinery, agricultural machinery, refitting vehicleInstallation Instructions: 1. Hole in the central control pre installation position about 300x190mm (slightly smaller is ok) 2. Put the dashboard into the open hole, and connect the power harness and sensor harness on the back of the dashboard in turn (please check the instruction manual for the order of the cable, it is recommended to find a professional electrician to assist in installation) 3. Fix the panel with screws Stepper Motor Description: Stepper motor is to convert the electrical pulse excitation signal into the corresponding angular displacement or line displacement discrete value control motor, this kind of motor every time an electrical pulse input one step forward, so also known as pulse motor.