Distribution panel in a modern Italian hotel room

How much energy does it cost to save energy? In this 4-star hotel each room is equipped with a distribution panel including an RCD (very good for electrical and fire safety) and a transformer 2*12V, rated no less than 24VA. Obviously the transformer supplies the door chime, some electronic control gear e. g. for the air conditioner, the electro-magnetic lock and the auto-shut-off: When the key card is removed the room lighting is switched off automatically in 2 groups with different time lags.

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