Couplers & I/O modules: Item no. 753-1646KNX TP Secure Interface1 of 4Picture differs from the item.Item no. 753-1646 KNX TP Secure InterfacePlease wait ...PU (SPU): 1 PieceAdd to shopping cartGenerate DatasheetCompareAdd to WatchlistFind distributorsItem no. 753-1646 KNX TP Secure InterfacePlease wait ...PU (SPU): 1 PieceAdd to shopping cartGenerate DatasheetCompareAdd to WatchlistFind distributors