First time solar controller user. I have the MPPT 75 Smart Solar. How do I power it up so I can use the phone app to set the parameters? I read online that I can't use my benchtop power supply in the PV ports. How do I get power into this thing? Couldn't find anything in the manual or online, so I assume my question is too stupid for anyone else to have asked. It's a blue brick if I can't turn it on :)