The Hotel Rooms can be facilitated by Touch Type Door-Bell Solution, includes the Room Number on the outdoor panel’s Display, ‘Do Not Disturb’ & ‘Make UP’ function on the Display of both indoor & outdoor unit. When user selects ‘Do Not Disturb’ or ‘Make UP’ from the indoor panel, it’ll show the corresponding notification on the outdoor unit. Input power: 220 Volt AC Frequency: 50 Hz