... /6 pump 4.Energy log 5.Intelligent electrical control Suitable for:Suitable for Split and Pressure system, which set the flow control, heat ... pump:4pcs,< 600W Suitable power of electrical heater:1pc,<1500W INPUT:One Sensor for collector(pt1000,probe≤500oC,Silicon cable≤280oC)Two ... protectionebus function(far distance controlling by keypad with display) Solar working station for solar water heater