This is a stylish and elegant holding tank meter gauge that provides a clear display of tank level (Low, High, or Full). Holding tank meter gauge is designed for durability and compatible with nearly all kinds of electrical system. Bezel Material: 316 Stainless Steel, reinforced convex cured glass. This tank meter (0-190ohm) can be connected to red and yellow backlight. Installation Dimension: Φ52mm (2” Diameter), screw-mount style installation. 100% Waterproof and anti-fogging protection. Protection grade is IP67. Operation temperature: -40°C ~ +85°C. Installation: lock the gauge to baseboard directly by hand. Connector: multi-plugs socket connection. Item Number: PKY12000.