Decided it was time to upgrade the solar charge controller. The old cheap one worked very well but since the bus sits for quite awhile the starting batteries kept draining. So this charger can charge 2 battery banks. It charges the Main bank up to 30amps, then when that bank is in float mode it switches to charging bank 2 at 1 amp trickle. Kinda neat! It came with the ebox-wifi but they shipped it with the wrong cable. So back to eBay. I picked up the correct cable, a temp sensor and the MT11 remote monitor screen. After I got it I realized I can only have one plugged in at a time. Either the wifi box or the MT11, bummer.