Search for: Log In Register OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › Will zone expander v1.1 work w/updated OS3.0 AC-powered controller? Tagged: expander This topic has 2 replies, 2 voices, and was last updated 4 years, 8 months ago by TXSprinkler. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts May 16, 2020 at 2:50 pm #66054 TXSprinklerParticipant Hello, In 2015 I purchased controller Hw Ver 2.3AC and a Zone Expander v1.1 24V AC. I will be purchasing a new controller. Will my old zone expander work with the newer OS3.0 AC-powered controller? Thank you! May 16, 2020 at 2:51 pm #66059 RayKeymaster Unfortunately OS 3.0 only works with expander version 3.0. It’s not compatible with expander 1.x or 2.x. May 16, 2020 at 2:56 pm #66061 TXSprinklerParticipant Thanks for the quick reply. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In OpenSprinkler › Forums › Hardware Questions › OpenSprinkler › Will zone expander v1.1 work w/updated OS3.0 AC-powered controller?