External Alarm Connection - Nitro NVR4SGX User Manual

2.3

External Alarm Connection

Alarm output connection
Please note the usage of jumper JJ1. If you use DC, either of connections is OK. We suggest
you to use those DC under 12V, 1A.
If you use AC, please open the jumper. There are 4 jumpers (JJ1, JJ2, JJ3 and JJ4) in DVR
main board, corresponding with 4 alarm output. The default is closed.
Warning: If you use AC input for relay output, please open the jumpers.
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