DSC Communications 300-1104-902 Circuit Board is a DSC Communications circuit board identified by part numbers 300-1104-902 and 300-1104-502 TCU3 Circuit Board, with WL131 as the variant designation. The WL131 label denotes the specific variant of the TCU3 circuit board. This component is used within DSC Communications systems that require the 300-1104-902/300-1104-502 TCU3 circuitry.
