1Widely Used: Digital Multi Function Gauge is very suitable for various watercraft such as ships, fishing boats and yachts. 2High Class Materials: Oil temperature gauge is made of 316L stainless steel bezel and anti fog curved glass cover, which is IP67 waterproof and dustproof, ideal for harsh environments such as acid, alkali and humidity. 3LED Backlight: LED backlight is used for easy viewing of the vessel at night. The multi function gauge is characterized by high indication accuracy, high versatility, reliability and stability, and easy to use. 4Wide Voltage Design: Long term working voltage is 9 to 32V, and digital multi function gauge is low power consumption with long life and short start up time. 5Strong Connection: The Digital Water Temp Gauge is mounted with screw holes for a solid connection and works even under strong vibrations.