Features: - With curved glass (with anti-fogging function) - Use moving-magnet principle to drive the needle, featuring good endurance and anti-vibration. - Be suitable for all kinds of water temperature sensors , and display the temperature of the water tank - With ultra-wide working voltage design( long-term operating voltage: 9-32V, Maximum up to: 36V ( 1 min)) - Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. Specifications: 1.Backlight: Red 2.Signal: 287.4-22.4ohm 3.Indicating Range: 40-120 4.Fixing dimension: 52mm(2") 5.Working Voltage: 9-32V(12V/24V) 6.Temperature Indicator Support :Boat ,Car,etc Package Includes (As Picture Show ): Package 1 : 1 X Water Temp Gauge 1 X Install Manual Package 2 1 X 1/8NPT Sensor Package 3 1 X Water Temp Gauge 1 X Install Manual 1 X 1/8NPT Sensor