NON-PROGRAMMABLE, TEMPERATURE RANGE:38-88 DEGREE FAHRENHEIT HEAT 60-108 DEGREE FAHRENHEIT COOL, 3 AMPS, MAXIMUM FLIP TOP DISPLAY DAY/NIGHT 20 VOLT TO 8 VOLT OUTPUT, WEIGHT:2OZ, DIMS:4.50"H X 4"W X 3/4"DFOR USE WITH UGFD MODULATING RHEEM FURNACES ALONG WITH OTHER MODULATING FURNACES