I am not sure what you mean. When it was installed, the meter starting showing what we were using straight away, per day. The electric company give you a booklet to read to understand it. It shows you in so much detail what you normally use, how much you have used so far, how much you have used today, etc etc. All I can say, is that we think it is really good and will help us to keep the electric bills down. If anyone is in the shower, and it is showing RED, for too long, we are shouting upstairs, to GET OUT THE SHOWER, you are costing us a fortune! Hope this answer helps you. We will definitely benefit from having it installed.