Smart and simple, the Venstar T1000FS FlatStat Thermostat lets you take easy control over your home's environment. This thermostat has a user-friendly interface and an easy-to-read digital display so you won't strain your eyes. It's sure to suit your home's decor with a simple design and clean white finish. About Venstar Inc. Venstar, Inc. was founded in 1992. They are one of the largest thermostat suppliers in the world. Venstar designs and produces high tech HVAC, lighting, and refrigeration controls for commercial and residential use. They headquarter in Chatsworth, California and have additional engineering centers in Oregon, Colorado, and Taipei. Their manufacturing is based in Shanghai, China. Venstar is known for providing value to their customers via ease of installation and use, proven cost savings, improved energy efficiency, quality, and reliability. They turn innovative ideas into leading products and services. 1-day programmable, auto-changeover FlatStat thermostat. 2-stage heating and 2-stage cooling. For use with gas/electric, heat pump with aux, and electric systems. Bi-color LED: red for heat, green for cool. Installs flush with the wall. Dimensions: 2.7W x .37D x 4.3H in.