10
A connection between all contact inputs (1 to 15) and the ‘C’ (common) terminals shall
always be made, as indicated in the below diagram.
NO (Nor
mal Open)
con
tac
t
NC (Nor
mal Closed)
con
tac
t
Depending of the application, a selection of NO (normal-open) or NC (normal closed)
contacts can be made through software configuration. NO contacts can be triggered
by standard tact switches, while NC contacts offer the additional advantage that a wire
interruption is detected as a contact trigger (which often is a requirement for alarm or
emergency announcement systems).
3) Micro SD card slot:
The micro SD card slot (with pre-installed micro SD card) allows integrated installation
of the media carrier. When no frequent changes of announcements / alarms are required
(e.g. alarm & announcement systems) it is recommended for having the media carrier
internally installed avoiding removal by unauthorized users.
Micro SD card slot (indicated in orange square) on FMP40