The SunStat PRO II programmable thermostat (model 500775) is the newest thermostat from SunTouch. The Pro II thermostat is truly innovative. It is packed with most advanced features yet remains very easy to operate. Designed and created by SunTouch, the PRO II thermostat has built-in GFCI protection for your safety and is covered by a 3 year manufacturer's warranty which guarantees the quality of the product. When you're ready, the groundbreaking Easy Startup Wizard is there to help you quickly customize your floor heating schedule. When you turn on The Pro II, you'll find a preset program ready to go once complete with easy setup, a backlit clock that automatically changes for Daylight Savings and real-time results. With the possibilities available through our network and the ease at which it can be updated and expanded, the SunStat Pro II 500775 is the better and much-improved choice over the previous model (500670). State-of-the-art features and clever design make the SunStat Pro II 500775 your best option for floor heating system control: The Startup Wizard gets your floor warmed fast and with ease. Comes with a three-year warranty. Clock that operates in real-time, makes automatic DST adjustments. Comprehensive digital display is easier to read. Backlight makes viewing day, time, temp. and more easy. Create your personal schedule with menu-style processes. New options are easy-to-use and easy to understand (Warm All Night, Home During Day). Technological advancements make it easy to add-on new features and modules as they come into the market for the 500775. Connection to power base and faceplate mount improved, no need to worry about aligning pins. Connecting to household wires is easier than ever thanks to LINE-side solid conductor wires. Set temperatures for specific days or indefinitely (up to 99 days) with the much-improved HOLD option. Upcoming Home Automation features can be integrated into unit via module. Easy-to-use TEST function, come with eye-grabbing GFCI light.