The provided Supervisor PIN is Wrong. El pin de supervisor introducido es erroneo.
To activate the Do Not Disturb light:
Open the door.
Press the button located above the door handle on the inside of the door.
Close the door again to activate the red light on the outside of your door.
Please take care not to accidently switch on the Do Not Disturb light or housekeeping will not come into your room. You can also use the Do Not Disturb sign provided.