Microprocessor-controlled digital system with 12-color graphic LCD control panel with the following functions:

• Digital clock
• Test vehicle and service battery B1 and B2 condition (volts and graph)
• Test potable water tank level (percentage and graph)
• Indoor and outdoor temperature and outside temperature
• Waste water tank alarm
• Electronic battery isolator
• Control of the 3-way refrigerator
• Protective fuses
• Control of the car battery charging
• Service battery memory function