1、Multifunction Design: The three in one design allows you to monitor RPM, oil pressure, and water temp with just one meter, saving space and reducing the need for multiple devices on boats, yachts, and RVs. 2、Waterproof Construction: Made of 316L stainless steel front cover and anti fog curved glass, with IP67 waterproof and dustproof rating, digital oil pressure gauge is suitable for harsh marine environments and various vessels. 3、Backlight and LED Display: Boat RPM meter provides an easy to read red backlight for nighttime navigation, while digital display has high precision, repeatability, strong versatility, reliability and stability, easy to use. 4、Wide Voltage Range: Water temp oil pressure meter has a working voltage of 9‑32VDC and a maximum of 36V, with low power consumption, long lifespan, high accuracy, and fast startup time. 5、Secure Connection: Featuring a snap on wiring design for a sturdy connection, ensuring the gauge can operate even under strong vibrations, suitable for various transportation vehicles like boats, yachts, and outboard motors. 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. 1 x Digital Gauge 1 x Wiring 1 x Mounting Base 2 x Nuts 1 x Manual