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$400 Off MRCOOL® DIY Single-Zone Systems — Preseason Sale | Ends March 31, 2026
$400 Off MRCOOL® DIY Single-Zone Systems — Preseason Sale | Ends March 31, 2026

Bromic Expansion Board for Smart-Heat Controllers – BMS, 0-10V & Multi-Zone Integration

SKU BH3130070
by Bromic
Original price $373.00 - Original price $373.00
Original price
$373.00
$373.00 - $373.00
Current price $373.00
Availability:
currently available

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Frequently Asked Questions

Do I need the Expansion Board, or is it only for large commercial setups?

The Expansion Board is needed when you want to connect more heaters to a single controller than the base unit supports, or when you need to integrate Bromic controllers with a building management system (BMS) or 0–10V dimming control. It's used in both large commercial venues and sophisticated residential automation setups.

Does adding the Expansion Board affect how I use the Bromic app?

No — the Bromic app remains fully functional when the Expansion Board is connected. The board adds integration capability (BMS, 0–10V) without removing or replacing the app-based control functionality.

Does the Expansion Board require its own dedicated power source?

Yes, the Expansion Board requires its own power connection independent of the heater. Your electrician will need to account for this during installation planning. Refer to the Expansion Board installation manual for full wiring and power specifications.

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