The Dinosaur Electronics UIB 64 Ignitor Board is designed to work in Atwood AC/Gas water heaters that have both a 4 position and 6 position "edge" style or 10 "Pin" style connector. It can also be configured for use in older furnaces, water heaters, and refrigerators that use a standard ignitor board with a 6 position edge or pin style connector by configuring jumpers on the board.