FREEDIO FR4020A6

"2012-12-09", "MT7601", and "Rev:A" appears to be silkscreened on the board in the FCC photos.

Additional specifications, per the FCC datasheet, follow...
 * Receive sensitivity
 * -72 dBm @ 10% PER, 54M/135M
 * -88 dBm @ 10% PER, 6M
 * -90 dBm @ 08% PER, 1M
 * RF output power
 * 17 dBm @ 135M
 * 17 dBm @ 54M
 * 20 dBm @ 11M
 * Power consumption
 * Sleep mode: 1.1 mA
 * RX active (HT40, MCS7): 91 mA
 * RX power saving (DTIM = 1): 15 mA
 * RX listen: 6 mA
 * TX (HT40, MCS7, 15 dBm): 98 mA
 * TX (CCK, 11M, 19 dBm): 202 mA

The OUI shown on the FCC EUT's label is E8:AB:FA. It is presumed to be used.