52mm Digital Oil Pressure Water Temp Gauge with Backlight 3 in 1 LED Display Tachometer for Boat Yacht RV Truck Motorcycle 810‑00324 Black Dial with Silver Bezel Item Type: Digital Oil Pressure Water Temp RPM Gauge Material: Stainless Steel 316L Bezel + Antifog Glass Protection Level: IP67, fully waterproof with excellent antifog function Display: Voltage + Oil Pressure + Water Level Backlight Color: Red (default), Green, Blue, White, Yellow, Yellow Green, Orange, Purple (color switchable) Operating Voltage: 9-32VDC Operating Current: ≤60mA Operating Temperature: -30℃ to +70℃ Storage Temperature: -40℃ to +85℃ Protection Level: IP67, can work underwater at 1m depth Applications: Boats, Yachts, RVs, Trucks, Motorcycles Wiring: Red Wire - +9-32VDC Black Wire - Speed Signal Input Orange Wire - Backlight Blue Wire - Power Negative (-) White Wire - Oil Pressure Signal Input Purple Wire - Water Temperature Signal Input Gauge Function Instructions: 1. Short press the Mode button (less than 1 second) once to change the backlight color: backlight sequence is red (default), green, blue, white, yellow, yellow green, orange, purple. 2. Long press the Mode button (>4 seconds) to enter setting mode: a. Short press the button (<1 second) to switch to the gauge to be set, after selecting the desired gauge (corresponding digital display flashes), long press the button (>2 seconds). b. Scroll to the desired parameter group for the gauge, release the button, wait 4 seconds without op for data to be saved automatically and exit setting mode to normal display mode. c. Once in the tachometer speed ratio setting mode, holding the button will continuously increase the numerical value, release the button for the value to decrease continuously. Speed ratio adjustment range: 1‑300.0. Adjust to your desired speed ratio value, release the button > 4 seconds, the number is automatically saved. Between 1‑12.0 speed ratio, the step value is 0.1, between 12.0‑300.0 speed ratio, the step value is 0.5. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.