Fan Damper Control Module with 7 three-position switches, 4 status LEDs per switch and a key switch input The FDX-008W/KI connects to the main panel or the RAX-LCD when mounted remotely. It uses MIX-M500CH for control of fans or dampers and two MIX-M501A for status. Mounts with Main Control Unit or BB-1000, BB-5000 Series Enclosures with Remote Shared Display