Honeywell INTEVIO User Manual page 51

Note:
Spur lines with volume controllers are not monitored.
Connecting Contact Input
There are two ways to connect external devices or the third-party device to RK-MCU using the
contact inputs:
1． If the line of the contact inputs doesn't need to be supervised, connect the relay or the switch
output of the external devices or the third-party device to the contact inputs of the RK-MCU.
When contact inputs are activated, the corresponding function can be started. The interfaces
are powered by the RK-MCU; please do not connect any external power sources.
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