Fortinet FortiAP-210B (FAP-210B)

Overview
"WAPA-250N_V01" and "ESX-X00-9701R" is silkscreened on the board in the FCC photos.
 * AR7161 is presumably used by this device

The OUI used (00:09:0F [Fortinet]) is per the FCC EUT's MAC label.