The Settings page allows you to configure the IRTrans devices you want to connetc to, as well as the iRed2 servers, if you are using a Mac with iRed2 running.
On the first start of iRedTouch, the application does not know about the name of your IRTrans devices. They will show only a module version and serial number. To distinguish multiple modules you may assing a unique name to every module. Tap the blue disclosure button and go onto the next settings page:
Tapping on the name field let's you change the name. Please note that changing the IP adress is not possible, because it is configured on the module itself. To do that using Mobile Safari, tap "Configure in Mobile Safari". If you are not sure which module you are configuring at the moment, tap "Identify module" and the respective IRTrans will flash red once.