AC310 / AC315::How to:;Add an additional Camera Unit

Switch the Parent Unit ON 

In the 2nd row press OK and the pencil for Camera 2 will turn blue 

Switch on the additional Camera Unit

Whilst the + icon is still blue press the Pairing Button on the top of the Camera Unit for 2-4 seconds and release

The + icon in camera 2 will now show as a red bin Icon