Features: 1. Wide Applications: This water level gauge is suitable for RVs, yachts, fishing boats, and ships. 2. Smart Indication: Equipped with empty and full indicators, this water level meter accurately displays tank water levels, allowing users to monitor water quantity at any time. 3. Superior Visibility: Built-in backlight ensures clear visibility in all lighting conditions, enabling easy reading of water level information. 4. Compact Size: 2 inch (52mm) design makes it ideal for dashboard mounting on vehicles or equipment without occupying excessive space. 5. Durable and Reliable: Constructed from durable materials with strong resistance to shock and vibration, ensuring reliable performance in various demanding environments. Specification: Item Type: Water Level Gauge Material: ABS + Stainless Steel Working Voltage: DC 9 to 32V Parameter: E-1/2-F Resistance Range: 0 to 190 (U.S. gauge) Installation Size: Approx. 52mm / 2in Display Function: Water Level Fitment: Suitable for RVs, yachts, fishing boats, and ships