4 in 1 Central Control Dashboard DC12V Oil Level Oil Pressure Water Temperature Voltage Red Backlight for RV Boat Yacht Item Type: Central Control Dashboard Material: Aluminum alloy, ABS, stainless steel, tempered glass Function Display: Multifunction panel can be multipointer display oil level + oil pressure + water temperature + voltage 4 units, red backlight with alarm, engines stop, Start/ON/OFF, low oil pressure alarm, water temperature alarm, backlight button, and preheating button functions Oil Level Indicator Range: F-1/2-E, (signal input 0-190ohm) Indicator Range of Oil Pressure Gauge: 0-5Bar (72PSI), (signal input 10-184ohm) Water Temperature Indicator Range: 40-120℃, (signal input 310-23ohm) Voltmeter Indication Range: DC8-16V Operating Voltage: DC12V circuit system Working Current: ≤100 mA Operating Temperature: -30℃ - + 75℃ Storage Temperature: -40℃ - + 85℃ Protection Level: IP67, can work in 1m underwater position, excellent anti fog function Application: This panel can be installed in your RV, yacht or engineering car control position, only need 210x160mm/8.26x6.29in unit area, greatly save space, through the panel data to know the state of the engine Application: Multifunctional central control panel can be used in engine, generator set, RV, yacht, fishing boat, ship, construction machinery, agricultural machinery, modified car and other fields. Installation Instructions: 1. Cut a 200 mm x150mm/7.87x5.9in hole in the preinstallation position of the center controller 2. Put the panel into the open hole, and connect the power supply harness and sensor harness on the back of the instrument panel in turn (please check the instructions for wiring sequence, it is recommended to find a professional electrician to assist in installation). 3. Fasten the panel with screws Stepper Motor Description: Stepper motor is the electrical pulse excitation signal into the corresponding angular displacement or linear displacement of the discrete value control motor, this motor moves one step whenever an electric pulse is input, so it is also called pulse motor.