Robertshaw RS5220 2 Heat/ 2 Cool Digital 5-2 Day Programmable Thermostat Heat Pump, Single Stage Fully programmable with soft touch keys to easily set four events per day AND 5-2 day scheduling Pop-up Wizard to customize thermostat settings with an instant start-up menu Vacation set point override to reduce energy use while away from home fully compatible with all standard 24V AC heating and cooling systems