With this Audio Addition Record any sound you want to the sensors when they trigger. A record button and microphone will be added to the unit so you press the button and either talk into it or add any noise you like. For instance, Say I have 4 Parascopes at a location. I can record my voice on the Parascope as to where it is, Hallway, Kitchen, Bedroom etc. and if i'm out of the room I know exactly which one is Triggered. This feature can be used for so many things.