2022 New 52mm Universal 2 in 1 Dual Gauge Application: Marine Boats/Truck/Bus/Motor Home/Hot Rod/Generators About the Gauge Reading: The device works, with a little delay (about 20-80 seconds) of changes in the readings. Apparently, it is done in order not to react to the splash of water in the tank. Gauge Connection: black line connect to the negative line,red line connect to the positive line,green line connect to the sensor signal line,yellow line is exchange button line Feature: - 52mm diameter Two in One Gauge show with easy installation- Programmable Input Resistance Ohm Signal to adapt different fuel /water/temperature sensor0-190, 0-180, 10-180, 240-33, 240-30- High Resolution View under sunshine- Installation Diameter: 52mm (2inch)- Reverse polarity protection and anti-fogging performance- Working Voltage:12V/24V- Working temperatures: - 40 to 85C- IP66 Waterproof- Fuel Level Gauge Alarm Set:20%-Water Temperature Gauge Alarm Set : 982 INSTALLATION GUIDE 1. Cut an 52mm (2-1/16 ) hole in the panel (II) allow a clearance of 55mm (2 3/16). behind the panel.2. Remove fastening ring (I), insert gauge from front. Tighten gauge (III) using fastening ring ( I)3. Connect cables according to the diagram/label. Setting MenuUnit R 1 R 2 1.Hold & Press the button, Power On Gauge, the LED screen will show Switch Show Unit, R 1R2 2.UnitFuel Gauge, Water Level, HTG Sewage Level: %Water temperature: or 3.R1---Configure Top Row Signal Range Press Button to switch 000 ~006For example, LED will show 00 1which means 0~180ohm, then release the button and wait digital flash to complete to save setting 4.R2---Configure Top Row Signal Range Press Button to switch 000 ~006.For example, LED will show 002 , which means 10~180ohm, then release the button and wait digital flash to complete to save setting Package: 1PCS Gauge+Manual+Cable+Sensoror1PCS Gauge+Manual+Cable