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Grand Hotel Niš is located in the very center of Niš. The hotel is of high quality (4 stars) and contains 120 rooms and apartments, two large conference halls, a SPA and fitness center, a state-of-the-art kitchen and a restaurant. It was built in accordance with the highest world technological and ecological standards.

Apart from the cutting-edge equipment, the hotel contains a system for controlling the hotel rooms, which includes smart panels and software.

In front of the hotel room, there is an intelligent hotel panel with a scanner for RFID cards which is used for opening the entrance doors. The panel has 3 indicators with the hotel signalization (DND – do not disturb, pick up the laundry and clean the room) which glow when a guest presses one of these on the panel is located inside the room. Apart from these basic functions, on the panel there is also the room number with the backlight. In the room next to the door, there is a casing for RFID cards whose function is to activate the scenarios and turn off the supply with a timer.

In addition, there is a central panel with an LCD display for controlling the fan coil, detection of the openness of the window and controlling the hotel signalization. In the bathroom, there is an SOS push-button card which automatically sends a notification to the reception through the software about the room in which the action happened.
In order for all of this to function together and to unify all the integrated devices, hotel management software with an OPC server was integrated for communication with the FIDELIO software.

The Courtyard by Marriott Belgrade City Center offers a truly unforgettable hotel experience, with exceptional amenities and a prime location in the city center on the famous Republic Square.

The elegant and spacious accommodation features ergonomic workspaces and picturesque views of Belgrade and the Danube.

To improve the lighting in the hotel, ION Solutions integrated the Smart House™ system with HDL equipment in the hotel's hallway and restaurant, introducing DMX control of RGB lights to achieve better lighting effects.

Hotel "Courtyard by Marriott" one of the world's largest four-star hotel brand is equipped with 118 rooms, a multipurpose multimedia conference hall with 200 seats, a restaurant with more than 100 seats, a spa, fitness room, underground garage and other facilities prescribed by strict standards of this chain.

In order to enable employees to more easily manage the substations of the heating substation, boilers and electric boilers, chillers and air conditioning systems with subsystems of air chambers, a central monitoring and control system located on the SmartX Controller with additional modules has been implemented.