Venstar's FlatStat residential thermostat features two-stage heat, two-stage cool for use with gas/electrics, heat pumps, electric and hydronic heat; automatically switches between heating and cooling as needed; all programming and setpoints stored in nonvolatile memory and are never lost in a power failure; and an LED indicator glows green or red to indicate cooling or heating. A mounting bracket is included for easy drywall installation, or fits in a 2" x 4" junction