7-Day Programmable Thermostat 7-day (5-and-2) scheduling with 4 programming periods per day for consistent heating and cooling patterns Floor sensor monitors temperature to deliver accurate control for your heated floor Allows Fahrenheit and Celsius read-out settings for convenient reference Built in ground fault circuit interrupter cuts power in the event of a power surge, helping to protect you, your floor and your radiant system Compatible with most 120/240-Volt radiant floor heating systems 2.875 in. x 2.125 in. display for easy viewing of settings and functions 120-Volt power source recommended for heated underlayment applications 7-day (5-and-2) scheduling with 4 programming periods per day for consistent heating and cooling patterns Floor sensor monitors temperature to deliver accurate control for your heated floor Allows Fahrenheit and Celsius read-out settings for convenient reference Built in ground fault circuit interrupter cuts power in the event of a power surge, helping to protect you, your floor and your radiant system Compatible with most 120/240-Volt radiant floor heating systems 2.875 in. x 2.125 in. display for easy viewing of settings and functions 120-Volt power source recommended for heated underlayment applications