Specially design for solar-public electricity system, which is in exchange of the solar system, it has power switch where there is a shock by the battery or utility grid, and also the utility grid supply charging module. Its energy saving, and also ensures the power supply. It also has the same function of eprc. Specifications: 12v, 12/24v, 5a, 10a, 15a Use mcu and professional software as the control center to fulfill intelligent soc control, protection to overload, outside and insdie short circuit, reverse connection, thunder and lightining, pv panel reverse current, over charge and discharing etc, usd pwm high efficiency charging way and temperature compensation. Industry level production standard, led indication on system condition. The controller pcb is pained with england apl lacquer, its highly moisture-proof Packing:1pc/color box, 50pcs/carton, carton size:51&31&21cm.Gw:13.5kgs, nw:12.5kgs