Detailed Product Description TR8100FH touch screen thermostat for under floor heating controlProgrammingChoice of 7 day, 5/ ... DisplayLarge, 4.3-inch touchscreen display;Blue, lighted display for easier low-light viewing;Larger, easy-to-read character ... size;Extra-large touch keys for easy operation;Clean, uncluttered touchscreen display provideseasier navigation.Comfort ...