Have you ever watched a movie in a movie theater and the sound suddenly stopped working? What happened? More than likely, the movie stopped until the sound was fixed. Or if it could not be fixed, you likely left the movie theater, and your money was refunded. After all, it’s pointless to watch a movie without sound, as you are only getting half of the experience — right?
It should be the same with security systems — they should always include sound so that security teams have full situational awareness to make the correct decisions in response to an incident. But that’s often not the case.