Honeywell Heat Pump Thermostat, Volts:24VAC, Temperature Set Range:40F to 90F,2 Stage Heating/1 Stage Cooling, Non-Programmable, Use With Honeywell Subbase Model Q674L-1504 Only (Not Included), Ruud Logo, Weight: 0.35 Lb, Dims:3-1/8"H X 5-5/8"W X 2-1/8"D. Mfg Box. Subbase Model Q674L-1504 Only (Not Included)