The maximum number of TL-PA211 AV 200 in a network is 8. If you want to add the more wireless router into your network, then you need connect One 211 into your main DHCP server /Internet main router, then other 211s can connect to AP or wireless routers to broadcast wireless signal. However, it is better not use the same channel for all the wireless routers in your large house.Then you will make it as you want.