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

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