Description:

Open a 3-3/8" dimension and 2-3/4" depth hole, put gauge into it and fasten. Indicating Range: 40PORT-40STBD, Output Signal: 0-190ohm. Hook up easily, 4 wires connection: Blue-power negative, Red-power positive, Black-signal wire, Orange(backlight)-power positive. Red Backlight, 9-32VDC(12VDC/24VDC) Working Voltage.