... card has many functions, convenient and quick, -DND, clean, wait, check out, SOS information real-time showed at PC 1. greatly ... air condition will enter into working mode.-DND, cleaning, wait, check out, SOS services request information notice to the front desk ... energy consumption is about 44%, 29%, and 10%. BWRC300 system saving switch system can save about 30% of the energy consumption. 4 ...