The convenient 6-volt AC Adapter allows our ProSelect® Crate Fans to be plugged into standard wall outlets. This eliminates the hassle of buying and replacing batteries. The AC adapter has a 6’ cord to make it easy to plug in anywhere. UL approved. This AC Adapter is designed for use with both the Standard Crate Fan (PE-ZW11039) and the Deluxe Thermostatic Crate Fan (PE-ZW11034) sold separately