Yeah, that could be an option. But why install an Add-A-Zone unit at $91.33 when you could install a new clock at $100.77? The wiring is already installed. With the new clock, Duke will also have the option of adding two more additional zones if he has the need in the future. For a differance of only $9.44 it's a no-brainer.

http://www.sprinklerwarehouse.com/Ad...add-a-zone.htm

http://www.sprinklerwarehouse.com/Si...rd-p/8309c.htm

Mick