Even before I got the product I was able to dig up some FCC certification documents that show that the manufacture has based them off Espressif Systems ESP8266EX modules. Let us see what we can learn about the modules and if we can have it do something else. Fell free to share any information and/or links.
I am learning about this module myself and also posting what others have found out about it too.
User localroger over on the Parallax forums came up with the pin out of the module.
"OK, I've got it. This is triple-checked and I'm quite certain of it, verified to the ESP8266 pins and even though the pin numbers don't match that FCC document, it's all consistent with the set of signals (even the three grounds) and the pinout of the ESP."
2 Power 3v3
3 CHIP_EN reset sw
4 XPD_DCDC / GPIO16
5 MTMS / GPIO14
6 MTD1 / GPIO12
7 MTCK / GPIO13 power sw
8 MTD0 / GPIO15 Y to main board, D8
9 GPIO2 D3
12 DVDD / GPIO5
17 TOUT / No Connection?
"All of them are verified to the chip except TOUT; I can't find any evidence that pin 17 is connected to anything past the first via on the daughterboard. Interesting that the invisible reset button is connected to CHIP_EN; maybe it just doesn't work? D3 is the wifi LED, and D8 the ON LED controlled by the same pin as the relay."