Sensi Lite Smart Thermostat - ENERGY STAR Certified, Smart Home CompatibleUpgrade your home's comfort the smart way with the Sensi Lite Smart Thermostat. Designed for easy DIY installation and packed with money saving features, Sensi Lite makes managing your homes climate effortless. Easy DIY Installation Set up in minutes with the built in level and clear, step by step instructions. No common wire (c wire) required for most systems, just install and go. Save about 23 percent on HVAC Energy ENERGY STAR certified and