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

    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...
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