How to connect relay to alarm out

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Oct 12, 2018
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Cape Town
Hi
I need help to connect my Hikvision DS-7200 series to a relay to trigger a 12V alarm with line crossing or motion.
Any diagrams for connections from the back of the DVR to relay and then to alarm?
Relay have a + and - on the one side and a C / CO / NC on the other side.
DVR have 12345678GG alarm in and 1G2G3G4H alarm out.
Any help would be greatly appreciated.
Thanks
 

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