NVR IVS and Camera SMD: adding a siren to each camera

[DCollins648]

I have a Dahua NVR running several IP cameras. IVS rules for each camera are active in the NVR and the system works really well.

NVR: DHI-NVR5232-EI
Cameras: DH-IPC-HFW5541E-ZE

These cameras do not have a built-in alarm and I would like to add a siren to each one as an audible deterrent. In theory the siren would be connected to the camera’s alarm-in NO port and then activated by the cameras SMD.

Here’s my question: will the local cameras’ SMD interfere with the NVR IVS ? Or are they completely independent of each other?

Follow-up question: Is there any way to set up the sirens so they could be triggered by the NVR IVS rules?

Thanks

 

[Underhill]

Your nvr is capable, you’d have to run an extra pair with an additional psu. I’d also make separate additional ivs rules for night or whenever you’re not going to be there to trigger horn/light.