Hotel Room Control Host, (Buspro)
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/hotel-system/hdl-mh48ip_d231-hotel-room-control-host
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/hotel-system/hdl-mh48ip_d231-hotel-room-control-host