RDL DS-TPSM2A Dual Microphone Preamplifier Wall PlateThe D SERIES TPSM2A modules are two pair audio sending modules compatible with RDL Format A twisted pair products. These modules are designed to be mounted in wall boxes, cabinets or other enclosures that allow users to connect audio sources. The TPSM2A models mount in RDL WB 1U and WB 2U wall boxes, or in standard U. S. electrical boxes. The D TPSM2A features a white front panel laminate with gray lettering that matches RDL Decora style remote