TP-LINK TL-MR3040 v1.x

Overview
"Rev:1.1" and "2050500241" is silkscreened on the board in the FCC photos.
 * The battery shown in the FCC photos is a TBL-68A2000 (3.7V, 2000mAh).

Default settings (including the SSID) are per the FCC manual.

The FCC EUT has a MAC label w/ a 90:F6:52 (TP-LINK) OUI.
 * It does indeed seem to be used... per WiGLE data. Additional OUIs of 64:70:02 and A0:F3:C1 are also found for the SSID pattern and are presumed to be used in addition.