Inter-M RM-916 - Manual (Page 5)

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10. ALL CALL LED
Visual indication showing that all the sixteen loudspeaker zones are selected.
11. CHIME SWITCH
This switch, when pressed, will output a four tone pre-announcement chime to the selected loudspeaker
zone(s).
12. CHIME SWITCH LED
This LED will illuminate when the chime switch is pressed.
13. POWER LED
This LED will illuminate when the POWER switch is ON.
14. TALK SWITCH
The TALK ON switch activates for the MIC-916 (LED ON).
15. TALK LED
Visual indication of the TALK ON switch.