Using "Upgrade Service" via Website

@Mea Culpa fear not, you can use the keypad or the dashboard on the webiste (with the 24.99 plan of course). You will really like your new SS3 system, but note, the keypad does a pretty nice job of adding the sensors, especially if you use mostly generic names. The provided list is better than you think.

Good luck and Happy New Year to you and your family.

Well, part of the SS3 setup process requires you press the buttons on the components to "pair" to the system, so doing setup via keypad seems easier (with SS2, it was actually easier via the online control panel).  If you have interactive monitoring, after setup and activation, you can "re-name" your sensors.