The new PowerCrew from Knaack has four GFCI protected electrical outlets providing 15 amps of power for operating tools or charging batteries. The power source comes from a standard three-prong straight blade extension cord, which plugs into the outside of the box. Other safety features include an internal relay that provides open neutral protection, a red LED that indicates power is on and a 15 amp fuse for current overload protection. For FREE information, visit http://pb.hotims.com/23726-348