Easy programming with no jumpers. On board LED display. Control for 8 Tortoise switch machines. Remembers the position of switch during power outages. Supports the full range of DCC accessory addresses (1-2044). Easy address programming with no need to connect a programming track . Connect the optional “Button Board” for local push button control. Simple hook up, 2 wires to the track, 2 wires to each switch machine.