The Gridless Revolution GR2000 is a waterproof MPPT charge controller designed for indoor or outdoor use. It's designed to be used with one of our solar generators to charge batteries. Fully assembled, the GR000 includes temperature sensors and active cooling to prevent overheating. With a total of 5-8 sets of solar panel connector pairs (each set rated for 40A), depending on your wiring configuration you may not even need splitters or wiring branch connectors. The output can be wired directly to a Gridless Revolution solar generator via the post terminals on the outside of the housing. If you want the latest and greatest, best efficiency, maximum input power capability, this charge controller is exactly what you're looking for. Programming and setting adjustment can be made via Bluetooth: Specifications: Part Number GR2000 System Voltage 12V DC or 24V DC Charge Method MPPT Battery Compatibility Deep Cycle Lead Acid Flooded Lead Acid Sealed Lead Acid (SLA) Gel Lithium Lithium Iron Phosphate (LiFePO4) 3S Lithium No Load Loss 5.0 W Max Solar Panel Input VOC 100V DC Max Solar Panel Input Power 200A version: 3000W/12V; 6000W/24V 320A Version: 4800W/12V; 9600W/24V Solar Panel Input Connector Pairs 200A version: 5 pairs 320A version: 8 pairs Solar Panel Input Connector Rating 44A TUV / 35A UL Total Rated Charging Current 200A or 320A Max Ambient Operating Temperature -35C to +45C Ingress Protection Waterproof, rainproof, UV resistant, fan and air inlet include waterproof and dust proof covers Weight 40 lb Dimensions 26" x 11-1/4" x 11-1/2"