North Star EPASF15 Whole Home Automatic Sediment Filter Point of entry filters are intended to filter water for entire home Self cleaning means there are no filters to replace Programmable self-cleaning system, with backlit lcd display, effectively rinses loose particulate from the filter screen allowing for minimal pressure drop due to dirty/plugged filters Operates on a 9V battery (included) with a low battery indicator or optional AC power adaptor (7302835) (not included) Brass threaded inserts with 1 NPT pipe Threads and Universal connections