I love my ADOR door. It beeps and they quickly learn to head inside when the right set of beeps does its thing. I think it beeps once at 5 minutes, then at 1 minute and then beep, beep beep just before it closes. The only ones who don't go in on time are the babies who have not figured out the ramp, but I tend to watch them nightly until they learn and so no one gets shut out. Sometimes we get a thunderstorm that causes the door to shut, but that means they get stuck outside and I notice it's shut in time to reset it. And, as for my icing issue, I simply set 2 sawhorses beside the ramp and laid a piece of plywood over the top but under the door housing so that the sensor was not blocked. All fixed (except they still don't like slippery). When we get weather that will be iffy, I always put food and water in the coop and, if they get stuck inside, it's no big deal. We get icy rain much more often than snow and the ice will cause it to not open/close but, if you have a cover, you'll be fine.