Kay, on the unit I spoke of everything is auto. At this time of year light comes on auto at 4 am, there is an alarm bell that rings 5mins before the feed belts are operational, this bell conditions the birds to get to the feed troughs when it rings, I believe this is one of the reasons they never stray to far from the shed, hatches open auto at 8. As dusk falls, when the last "dinner" bell goes the hatches will also automatically close after a set time. Lighting will go off slowly by dimmer switch. All the eggs are collected by a conveyor belt, the feeding periods and light are all delivered s