Bromic Heating Affinity Smart-Heat Control Expansion Board Bms/E

The Bromic Heating Affinity Smart-Heat Control Expansion Board BMS/E adds secure, hardwired connectivity to compatible Affinity control systems. Designed for 1-channel and 2-channel Affinity On/Off and Dimmer controllers, the board enables an Ethernet connection and provides a generic 0–10V input for integration with a building management system or home automation platform. This makes it a practical solution for commercial and residential installations that require centralized heater control without relying solely on wireless connectivity.

The expansion board installs directly inside the compatible Affinity controller, secures with two screws, and receives power from the controller, so no separate power supply is required. An included blue jumper activates BMS operation; when this mode is enabled, control is transferred to the connected automation system and the Bromic Heating app is disabled. Separate purchase is not required for Affinity 5-channel controllers because the expansion functionality is already included.