... /6 pump 4.Energy log 5.Intelligent electrical control Suitable for:Suitable for Split and Pressure system, ... which set the flow control, heat cycle, the exhaust, pressure control, temperature display, the transfer liquid injection ... of pump:4pcs,< 600W Suitable power of electrical heater:1pc,<1500W INPUT:One Sensor for collector(pt1000, ... ) Solar working station for solar water heater