Hello,
I have hikvision nvr DS-7608NXI-K2/8P connected directly to two 8mp DS-2CD2T87G2-LSU/SL and one 4mp DS-2CD1043G0-I cameras, I was able to connect a siren using relay module to protect the cameras from theft by configuring video tampering and loss events but when the nvr is restarted or...