I would like to know what is the range of this WIFI communicator for IFTTT with photon?
We actually do not manufacture the Photon WiFi module installed in these products. They were designed and manufactured by www.particle.io. They could more accurately answer your question.
However I can tell you it is similar to most any other WiFi device. What I generally tell users is to take their smart phone to the location where the board is to be installed. If you have good WiFi signal on your phone then the Photon module should be fine as well.