DIN08F – provides 8 opto-isolated zone alarm inputs to the damper control system from fire alarm system relay outputs.
DIN08F Datasheet (pdf)

DIN08M – provides 8 opto-isolated damper position monitoring inputs. Each damper normally produces an open and a closed signal. The DIN08M is used to monitor up to 4 Dampers.
DIN08M Datasheet (pdf)

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