Harmar Summit SL350 is the #1 USA made stair lift. More SL350's are installed in American Homes, offices, stores and churches than any other stair lift manufactured in the USA.
The Summit SL350 is unique in that is does not have any computer circuit boards. It uses relays rather than computer chips. While relays are an older technology, they are much more stable than the computer operated stair lifts built by other companies.