Universal, 4x, with labeling field, expands a KNX probe sensor module Universal Art.-Nr.: LS 509. TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSA, TSO