model TRACER 4210AN Voltage 12-24volt current 40A max voltage PV Voltage 100v max input power 520wat (12volt) 1.040wat (24volt) ELECTRONIC PROTECTIONS •PV Short circuit protection •PV over current protection •PV Reverse polarity protection •Battery over voltage protection •Battery over discharge protection •Batrrery reverse polarity protection •Battrery overheating protection •Load short circuit protection •Load overload protection •Controller overheating protection FEATURES •Advanced MPPT control tecnology •Hight tracking efficiency no less than 99.5% •Maximum conversion efficiency of 98% •Common negative design •Suport lead-Acid and lithium batteries •Multiple load work modes •Extensive Electronic protection •Informative backlight LCD •RS485 Communication