The SVC has been an exceptional battery operated controllers for many years. There are a number of advances within the new version Node controller. For starters, the Node utilizes two 9 volt batteries for extended battery life as compared to one battery on the older SVC. The Node also has an allocation for a Master Valve in place of station 1 on the unit if you need to use it in conjunction with a Master Valve.
The SVC was unique in that it utilized station based programming. In other words, every station required you to program a Start Time, Run Time and Days to Water for each station individually. That had some advantages in certain applications but many found it confusing.