Only used the control center for a little over a week and the unit where you enter your values has completely died. The screen does not come on and the cord from the base does not plug into it. Frankly, I've had serious reliability issues for the entire week and few days I've been using the control center. Which seems to be a trend I've experienced with my other ZooMed products. While the convenience is definitely there when the control center works, $100+ for the item should get me more than 10 days of use. So happy Chewy refunded my money with virtually no questions asked or any return hassles.