Originally Posted by SoCalLandscapeMgmt
If it's 12 years old it should be an MC-B+. The original MC+ and MC-A+ had the yellowish/brown metal faceplates. There was no functional or cosmetic difference between the MC+ and the MC-A+. There was a slight design difference electronically. The MC-B+ was released once the James Hardie Co bought Irritrol / Garden America from Black and Decker. The Irritrol B+ Series were all engineered by James Hardie.
Was there a version that had both an NVM and NiCad backup? One I'm referring too looks just like the one in the photo, but with 12 stations. I'll see if I can find a date code and model # when I get there next time. My recollection is that it didn't have an NVM and lost programming when the batteries died. Slated to be replaced soon.