Environmental Controller Failure ... Bird Loss
A few years ago I visited a commercial-egg pullet grower who had just installed an environmental controller in his house. The grower had installed the controller to increase his control over house temperature and air quality, as well as help coordinate all of his heating and cooling equipment. He was tired of setting more than a dozen thermostats of questionable accuracy and watching exhaust fans and heaters operating at the same time. With this new controller all he had to do was to select the house temperature he desired and the controller would turn fans and heaters on and off to maintain the desired temperature.