The Emerson Sensi ST55 Thermostat is a programmable thermostat that offers a variety of control styles including remote control, push button, app control, and voice control. It is compatible with various smart home systems such as Apple HomeKit, Wink, Google Home/Assistant, Amazon Alexa, and Samsung SmartThings. This thermostat has a sleek white design, is wall-mounted, and features a digital display with Wi-Fi connectivity for easy control. With a 7-day programmable schedule and AC protection, the Emerson Sensi ST55 Thermostat is a convenient and reliable choice for maintaining a comfortable home environment.