I have an automatic chicken coop door from the company Run-Chicken. It is one of the most brilliantly designed products I've ever owned. It has an app for setti

I have an automatic chicken coop door from the company Run-Chicken. It is one of the most brilliantly designed products I've ever owned. It has an app for setting up the opening and closing rules, which can be rather sophisticated, based on both time and light conditions. The device itself has no WIFI, bluetooth, or a radio of any kind. To program the device, you push a button to put it into a programming mode, then hold your phone up to its photo sensor, and it will flash the screen in a sequence of black and white to relay the encoded settings.