What is the MT50 used for?

[math55]

When looking at solar setups on Youtube for example, people always have the MT50 almost next to the Mppt ... what I understood is that the MT50 is some sort of a remote control for the Mppt? Is it really just that, or why do people almost always have the MT50 next to the Mppt?

Thanks for helping me out here !

 

[mikefitz]

It's a remote display and control unit that plugs into Epever MPPT controllers. If you need to program user charge perameter values that differ from the built in values , the MT 50 is needed.

Other controllers have differing techniques to program user values. Victron for example use a phone app that connects via Bluetooth

 

[JoeHam]

The MT50 is physically connected to the MPPT by an Ethernet cable. I’ve used up to a 25 ft long one without issue but it ships with a short one which is probably why most folks keep it close by.

I have a couple of their MPPTs that it works with so I use just the one MT50 to program them and then put it away.

 

[Murphyslaww]

If you get the wifi or Bluetooth dongle, you don't need the MT 50 as you can make your changes with the epever phone app.

 

[math55]

Thanks folks, all clear now