Battery powered, low voltage electronic setback heating and cooling thermostat with sealed relay contacts. Pre-programmed with four adjustable heating and cooling periods for weekdays. Preprogrammed with four adjustable heating programs and four adjustable cooling programs for weekends.
PSPH521L Programmable Heat Pump Thermostat Features: Lighted Display 2 heat / 1 cool heat pump Energy Star compliant Separate programs for weekdays and weekends Preprogrammed - up to 4 programs per day Separate programs for heating and cooling Either system powered with battery backup or battery powered Easily reprogrammed with LUX Programming Dial Large Liquid crystal display 5 minute air conditioning compressor delay Temporary and constant temperature override Total isolation between system power and thermostat