MidNite Solar CLASSIC 250-SL MPPT Charge Controller, Solar Only.Warranty - 5 yrs. Listed by ETL for US & Canada CE Certified Listed FCC Class B Listed Made in the USA2 Aux PortsFollow-Me functionThe Classic SL-250 MPPT Charge Controller is a simplified SOLAR ONLY version of the Classic 250 with streamlined menus. The Classic SL-250 has a graphics panel and ground fault but no arc fault or Ethernet capabilities. The Classic SL-250 has a maximum output current of 63 amps, an operating voltage of 250 volts and works with 12 to 72 volt battery systems. As with the whole Classic line, the Classic 250-SL has MidNite’s exclusive HyperVOC which extends VOC limits when needed. With a streamlined menu, these SOLAR only MPPT charge controllers are easy to setup and a breeze to install!