Comb Communications MK II Plus - Relays

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MK!II!Hardware!Installation!Manual:!Rev!1!
©2018!Comb!Communications!
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Technical and Functional Specifications
Description
MK II Lite
MK II Plus
SD Card Capability
No
Yes
Ethernet Connection
No
Yes
USB Connection
No
Yes
Relays
The relays on the PCB are as follows:
Intercom
Wire
Gate Motor
Relay 1
Normally Open (NO)
Trigger (TRG)
Common (C)
COM
Normally Closed (NC)
Relay 2
NO
Pedestrian (PED)
C
COM
NC
Relay 3
NO
Free Ext (FRX)
C
COM
Relay 4
NO
Auxiliary (AUX)
C
COM
Relay 5
NO
AUX
C
COM