The product is a programmable ventilation controller by Aprilaire, designed for easy control of your heating and cooling systems. The unit is corded electric, operates on low voltage, and is wall-mounted for convenient access. With a push-button control style and a rectangular thermostat shape, this controller allows for programmable temperature settings with 4 periods per day. The white plastic unit is compatible with Aprilaire products and features temperature sensor technology for efficient system switching with auto settings. Perfect for maintaining a comfortable home environment with energy savings in mind.