... according to the international standard operating procedure , high conversion efficiency , durable,and have long lifetime more than ... ,provide over charging , over discharging, short circuit and overload protectionoutputAC-220V, 1pcsDC-12V, 3pcs7,vailable for 12V, ... including installation, technical guide, maintain . YINGDE Provide You With > the best pricing >the finest products >the most complete ...