We use aerosol dispensers in our retail stores and purchased 2 units to test. We have been very satisfied with the functioning of the until. The setup required a bit of learning but is simple enough. We are using the dispersers with a/c power and batteries for backup because the programming is lost if there is a power outage.
It takes a little to get the hang of setting up/programming the dispenser but once it is set up it works very well. We are using this with ac power with batteries for backup.