A:Answer Hi - The VTech VM4261 is a non-expandable unit, thus you cannot add another camera to the system. If you are pertaining to the 4 panels shown on the display if you have the unit on Split View mode or the list of 4 cameras under the rename setting, it is only normal. This is because both of our expandable and non-expandable models are using the same configuration and that is why even if the unit is non-expandable it shows 4 cameras on the said settings.
Thank you,
-VTech Support