4-Year Evaluation of Soil Moisture-Based on-demand Irrigation Controllers Final Report
University of Florida and North Carolina State University
Michael D. Dukes & Bernard Cardenas-Lailhacar Grady L. Miller
"...only the AC system showed water savings (61%) compared to the control treatment. The systems from brands BL and LL, applied almost the same amount than the control (2% less and 1% more water), and the IM system applied 129% more water than the control treatment." p. 60
"Only the Acclima SMS system appears to be operative under these conditions; meaning that it could fully automate an irrigation system, without need for human intervention for monthly or seasonally rescheduling of the irrigation cycles." p. 61
The study spanned four years.