The Robertshaw RS5110 programmable thermostat is the perfect solution to keeping your home comfortable year-round. Not only that, setting back your thermostat twice each day can reduce energy costs up to 25%. Set it and save. Today's busy lifestyle demands hands-free temperature control, and with a programmable thermostat, you've got it. At the touch of a button, set your weekly program for summer and winter upon installation. You will always come home to a comfortable setting, and you'll save energy without even thinking about it. The 9600 is compatible with all standard 24 Volt AC heating and cooling systems. When you select a Robertshaw thermostat, you've made the choice of an industry partner that's been making quality products for 100 years. Come home to affordable comfort. Come home to Robertshaw!