... -50A) 1.have CE certificates; 2.5 Years Warranty ; 3.High quality; 4.Easy to handle ; New product , Solar Controller (48V-50A ... Optional)RS232,RS485Protectionreverse charging prevention, preventing reverse connection, overcharge of a battery, battery reverse connection prevention, lightning protection functiondimensions (mm)Depth ... .6*132.5(3U)(standard) Solar charge controller (48V-50A) at a low price