Enhance the comfort of your home with the Orbit 83521 Clear Comfort Pro Programmable Thermostat. This thermostat is designed to make temperature control easier and more efficient. With a clear rectangular shape and digital display, it is a great addition to any home decor. The Orbit 83521 is a 7-day programmable thermostat that runs on corded electric power and uses AAA batteries for backup. It is compatible with universal products and has a voltage of 4.5V. This thermostat features temperature sensor technology, heat-cool-off system switching, and is programmable with up to 4 periods per day. The control style is a dial, and the system has a heat stage of 1 and a cool stage of 1. The Orbit 83521 is perfect for those who want to keep their home comfortable without compromising on style.