Portfolio VM S Plus- W.M-Bus communication EC Radio Plus – H.C.A. with W. M-Bus communication Gradus-H.C.A W.M-Bus communication Zelsius-Heat / Cold meter available with M-Bus communication MTKDE/ETKDE- with W.M-Bus communication Multidata WR3-Heat / Cold meter with M-Bus communication 1 … 15 16 17 18 19 … 35