Hi  mwsmith824 —

Thanks for reaching out and welcome to the eero community! 

eero has two WiFi radios (2.4 GHz and 5 GHz) that both carry mesh traffic. We architect our mesh to optimally choose either interface to provide both highest throughput and extra redundancy. This also allows maximum throughput through the mesh even to slower 2.4 GHz clients at the edges of the network. Your eeros are always getting smarter through use and software updates, so your network's traffic will always travel as efficiently as possible.

To your direct question of range - since we mesh on both radios your range is the greater of either 2.4 GHz or 5 GHz depending on your environment and placement (for example if you place an eero sufficiently far that it cannot mesh on 5 GHz, it could still connect on 2.4 albeit at a lower total throughput). eero doesn't have a radio solely dedicated to carrying backhaul between eeros, and from our R&D, having a dedicated radio under-utilizes that radio. 

Thanks again! We look forward to hearing more from you in the future!