Setting Up Your Radio Thermostat Device For WIFI

1) The first thing you need to do is to get your thermostat installed using the installation manual.
2) Once that's done, if this is your first thermostat, visit the Radiothermostat Site to create an account.
    They will email further instructions for setting up the account, including a link to the WIFI setup instructions.
3) You can use your browser to set up the entire heating/cooling schedule
4) Once you're all set up you can download the iPhone or Android app for remote control

In case you wish to review the instructions in advance or miss their email, here's a copy of the WIFI set up guides:
      Windows XP/Windows7 WIFI Set-Up Guide
      Mac OS WIFI Set-Up Guide
    
You can also visit their FAQ or support site which has all kinds of information including a knowledgebase, forums, online help, youtube channel, etc.
Or their telephone number is (877) 602-5028