The Sensi™ Lite Smart Thermostat puts energy savings in easy reach. The controls are familiar and intuitive. Privacy Protection. You don't have to trade your privacy for energy savings. Your personal information and thermostat activity data won't be sold or used for other purposes. Save about 23% on HVAC energy* By adjusting the temperature using flexible scheduling, remote access, and geofencing, Emerson Sensi customers saved about 23% on HVAC energy usage. Quick and Easy Installation.** Feel confident installing your thermostat by following the step-by-step process on the easy-to-use Sensi App. No common wire (C-wire) is required with most systems.