1、HIGH PERFORMANCE: With red backlight for easy nighttime viewing, this gauge features high accuracy, excellent repeatability, versatility, and reliability. Simple and easy to use. 2、3 IN 1 DESIGN: Get oil level, oil pressure, and water temperature information from one gauge, reducing the number of devices and saving space. Ideal for boats, yachts, RVs, etc. 3、IMPROVED EFFICIENCY: This gauge significantly speeds up data reading. Users can see oil level, oil pressure, and water temperature at a glance, making operations more convenient. 4、WIDE WORKING VOLTAGE: Designed with working voltage range of 9‑32v, with the highest peak at 36v. Low power consumption, long lifespan, high accuracy, and short start up time. 5、SECURE CONNECTION: The buckle design ensures the gauge stays connected securely, even under intense vibrations, suitable for boats, fishing boats, yachts, outboard engines, etc. Item Type: 52mm Digital Display Gauge Material: ABS Guard Level: IP67, completely waterproof; excellent anti fog function Display: Oil level + Oil pressure + Water temperature gauge Backlight Color: Red (default), Green, Blue, White, Yellow, Yellow Green, Orange, Purple (color switchable) Working Voltage: 9-32VDC Working Current: ≤60mA Working Temperature: -30℃ - +70℃ Storage Temperature: -40℃ - +85℃ Fitment: Suitable for boats, yachts, RVs, trucks, motorcycles Wiring: 1. Red Wire: +9-32VDC 2. Black Wire: Oil level signal input 3. Orange Wire: Backlight (+) 4. Blue Wire: Power supply negative (-) 5. White Wire: Oil pressure signal input 6. Purple Wire: Water temperature signal input 1 x Gauge 1 x Wiring 1 x Mounting Base 2 x Screws 1 x User Manual