Features: 1.Application: This sewage holding tank gauge is suitable for RV, yacht, fishing boat, ship, easy to install, is a good replacement for your old or unsatifactory gauge. 2.Multifunction: Applicable for sewage holding tank, accurately measure and display the water level of the sewage, let you know the sewage capacity at any time. 3.Colorful Backlight: Built in backlight, the sewage holding tank gauge ensures visibility in any lighting conditions, allowing you to easily read liquid level information. 4.Compact Size: The 2 inch (52 mm) holding tank level gauge is ideal for mounting on the dashboard of a vehicle or boat without taking up too much space. 5.High Durability: The use of durable materials, with good shock and vibration resistance, can maintain reliability in a variety of harsh environments. Specification: Item Type: Sewage Holding Tank Gauge Material: ABS+ stainless steel Working Voltage: DC9-32V Parameter: LOW-HIGH-FULL Resistance Range: 0-190 (US plug) Installation Size: 52MM / 2in Display Function: Sewage Fitment: Fit for RV, yacht, fishing boat, ship