Give your family's comfort a smart upgrade. With the Sensi Lite (White) smart thermostat, it's never been easier. It all starts with a quick and simple installation-no common wire required with most systems1. Our top-rated mobile app lets you manage your home's HVAC from anywhere, anytime. Plus, your usage activity and personal data stays private. That's the power of putting Sensi's over 100 years of HVAC experience on your wall.