Audio Source Unit with mounting Chassis, Microphone, Paging Controls and Inner door Filler Plate.
Initiating Device Circuit Module. Mounts to local rail and takes one LRM space. Supports connection of 8 traditional Class B input circuits. Up to 4 input circuits can convert to Class B NACs. Supports one User interface module.
LED Display/Control Module – 12 Switches, 1 Green, 1 Yellow LED per switch
LED & Switch Module – 6 Groups of 3 Switches with 1 LED each