This Emerson ST55 Sensi Smart Thermostat is a top-of-the-line HVAC control device that comes with a variety of useful features. It has a sleek, white rectangular design that is wall-mounted and is compatible with a range of power sources, including corded electric and battery. The thermostat is programmable for seven days and is also compatible with various smart home systems such as Apple HomeKit, Amazon Alexa, and Google Home/Assistant.

In addition to these features, the Emerson ST55 Sensi Smart Thermostat has an adjustable thermostat, built-in Wi-Fi, Bluetooth, and remote control, which makes it easy to use. The device also has a low battery indicator, filter replacement indicator, and an automatic changeover feature. The programmable device has four periods per programmable day, and the temperature sensor technology ensures optimal heating and cooling for your home.