Water Level Gauge:- Backlight:7 Color LED - Signal: 0-190 ohm - Range: Empty-1/2-Full - Working Voltage: 9-32V - Fitment: for Universal Car Boat Marine Motor etc - Fit for Gasoline/Diesel Engine - Operating Voltage9~32VDC - Operating current60mA; - Operating temperature-30~+75 - Storage temperature-40~+85 - Alarm Set:< 13%Gauge Connection:Black: Ground(-) Red:9-32VDC Blue:Signal input Yellow:Backlight White:AdjustPackage:1 PCS Gauge+Manual+ CableWater Level Sensor:- Material: 304 Stainless Steel -Assembly: 5 holes -Mounting: 5 pieces of M5 screws and 2 mm thick gasket -Operating temperatures: - 40 to 85 degree -Protection rank: IP67 -Level Sensor Support : Water Level Gauge -Signal: 0-190 ohmSensor Connection:- Brown line Connect to the Signal Output - Blue line Connect to the Negative(-)Package:1 X Sensor+Manual