Polk Audio Wired Remote No Display New Condition. The waterproof (IPX6) remote is compatible with the Polk PA450UM marine source unit. The PRC100BC meets the ASTM B117 corrosion resistant materials/finishes and ASTM D4329 UV resistant standards giving it the marine requirements needed to survive in a harsh aquatic environment. Features of Polk Audio Wired Remote No Display: Wired Remote No Display MFG# PRC100BC 2in mounting hole IPX6 waterproof backlit illumination For PA450UM source unit. Included Accessories: Wired Remote No Display Documentation Package Contents: Polk Audio Wired Remote No Display Polk Audio PRC100BC: Wired Remote No Display New Condition