@RobGum 

For Wi-Fi Backhaul EasyMesh Network, we recommend up to 6 units in one EasyMesh network. 

Notes:

1) Wireless throughput and stability will not always increase as the EasyMesh device amount increases, if the wireless coverage is already enough when there are no dead zones already, it is not necessary to add more units.

2) The above recommendation is only for reference, actual throughput and performance might differ due to the house layout, obstacles, distances between EasyMesh devices, etc.