Retrofittable plug-in module for pump types Wilo-Stratos GIGA, Stratos GIGA B, Stratos GIGA-D, VeroLine-IP-E, VeroTwin-DP-E, CronoLine-IL-E, CronoTwin-DL-E, CronoBloc-BL-E, Yonos GIGA-N, Wilo-Helix EXCEL, Wilo-Economy MHIE, Wilo-Multivert MVIE, Wilo-Helix VE. Serial, digital interface BACnet MS/TP master for connection to building automation (BA) via RS485 bus system. Protocol in accordance with the BACnet standard (ISO 16484-5) Notice: The pump software must be compatible (for information, see Wilo homepage or consult the nearest Wilo branch).