SQFlex Control Box. This controller and system monitor can be used with solar alone or in combination with the IO101 (for manual generator backup) and/or the IO102 (for wind generator). The CU200 will allow to add a float switch to shut off the pump when storage tank is full. The system monitor on the CU200 shows the following, pump operation, full tank, input power (watts), alarm indicator for dry running, over voltage, overload and over temperature. More Info... Grundfos_CU200.pdf