The ceiling over the lectern and the front of the room is suspended plasterboard. The ceilings over the audience are 2 ft. Ten outlets around the periphery of the room, three duplex boxes installed in the ceilings, one quad box in lectern, one quad in the electrical closets. All are on two 20-amp circuits. The CCTV has one distribution line incoming and one academic-loop cable for out going.
Heating is done by hot water ceiling and wall registers.
The Crestron has a hidden enable button on touch screen, so passwords or keys would not have to be issued. Without the enable button pushed, the lights are only accessible system. Screen Up Video mute is on. Push button on the touch screen to UnMute the video.