The microphone and transmitter are kept in a black pouch. You need to turn the transmitter on, and fasten on both the transmitter and the microphone. When finished, turn off the microphone. Return it, together with microphone and transmitter, to the rack drawer. Lock up the rack.
Rotate combination lock to display random numbers.
Decoding This room is equipped with both. Equipment on the rack should be all ON as well. The Assistive-Listening system consists of a transmitter and headsets with adjustable volume. The transmitter is located on the rack, and is always turned on. Students can use the headsets to reinforce the sound signal according to their needs.