A flexible way to control your external heating source
- Perfect for selecting, using and synchronizing alternative heat sources
- 4 single switches and one CO connector for your accessories
- Energy saving
- The choice between 4 modes of operation:
- Internal: electrical heater only
- External: secondary heat source only
- Both: electrical heater & secondary heat source
- Smart: secondary heat source & electrical heater if needed (1°C below set point)