Panasonic WLM-1

Overview
"MADE IN JAPAN" and "DFUP7098ZA" is silkscreened on the board in the FCC photos.

This module appears to have been used in the Panasonic CF-07 and CF-VDW07.

The FCC manual specifies a default SSID pattern of cfvdw07-XXXXX (Ad-hoc) for whatever the manual is for.