ITEM NAME:Rudder Angle Indicator Gauge with Marine/Boat Rudder Sensor 52mm 12V/24V Ma S9D1 Rudder Angle Indicator Gauge with Marine/Boat Rudder Sensor 52mm 12V/24V Ma S9D1 Makes it easier to navigate the yacht by indicating the direction of the rudder at all times Use moving-magnet principle to drive the needle, featuring good endurance and anti-vibration Installation Dimension: 52mm(2 inch ) Installation: lock the gauge to baseboard directly by hand Connector: integrate 12V/24V patchcord Background light: Red or Yellow Indicating Range:R - L Working Voltage:12/24V Signal: 0~190Ω Protection grade:IP67 for front side;IP65 for back side Colour: Black Material: ABS Package Contents: 1 * Angle Indicator Gauge 1 * Multi-plug socket 1 * Installation Instruction