M&S Systems MC111DM - Manual (Page 5)

3
MASTER UNIT CONTROLS AND FEATURES
The illustration below shows the controls and features used to operate the MC111M or
MC111DM Master Units.
VOLUME
SPEAKER SYSTEM
MONITOR
DOOR TALK
DOOR
LISTEN
ROOM
TALK LO LO HI HI
1
2
3
4 5
6
7
1. Speaker/Microphone 5. Door Listen Switch
2. Speaker Volume 6. Room Talk Switch
3. System Volume 7. Door Talk (Press both buttons)
4. Monitor Switch (Door Release on MC111DM)