... large LCD interface, easy to view and configure; (2) Integrated DC Switch (Lockable-off); 4.Communication(1) With ... GPRS and other communication modes; Specification: BG1K5TLBG2K2TLBG3KTLInput (DC)Max. DC voltage(V)500Starting voltage(V)100MPPT range(V)200 ... 60°C,Derate after 45°CProtectionOvervoltage protection, DC isolation monitoring, DC monitoring,Grounding fault monitoring, Grid monitoring, ...