I purchased an Access and in the course of setting it up noticed history was stored for 31 days. I remember looking at charts for more than 31 days from the old hub. The drop down range for charts offers the options: Today, 24 hours, 7 days, 31 days, year, all time. Now the year and all time options return the message history is only available for 31 days. So far, I haven't seen a real advantage for the Access. The range is no better. The battery backup, storing data during a power/internet outage is of limited value if I only get to see the last 31 days. Seems like prices are going way up and function is going down.