Intercoms with DVR support (event recording)

Event recording support

— the ability for the intercom to operate in video recording mode from call panels or separate surveillance cameras. In most such models, recording is not continuous but only occurs when the call button is pressed or another event occurs—such as the activation of a motion detector (see below). Video is most often saved to a memory card (see "Card Reader" below). In any case, this function allows you to determine who called the intercom at "inopportune times"; it can also be useful in other situations, even up to reconstructing an incident captured by the cameras.