Image shows a similar unit from the same series.
 
Victron Energy SmartSolar MPPT 250/85-Tr VE.Can Solar Charge Controller.
For 12V, 24V and 48V battery systems. Maximum 250V Voc, 85A charge current. Built-in Bluetooth communication
 
Optional pluggable LCD display
 
This product must be installed by a qualified electrical installer.