1.Touch screen, embedded system; 2.Control thermal system; 3.Password Protection; 4.Monitoring system; 5.Customized program. This controller is ... systems with tank capacity less than 3000 liters. The system can be natural, as in thermosyphon, or pressurized ... 250 volts - wall mounted - display showing the solar system status, system temperatures, time, operation status, and fault location, if ...