Functions / Features Plastic housing Connection to bus line via KNX terminal Auxiliary power connection via dedicated screw terminals Power supply connection via screw terminals Degree of protection IP 20 (device installed) Climatic classification 3K5 and mechanical classification 3M2 (according to EN 50491-2) Pollution degree 2 (according to IEC 60664-1) Safety class I Mounting on 35 mm profile rail (according to EN 60715) Device with 4 modular units (1 UM = 18 mm) Weight 320 g