Emerson Quiet Kool EARC8RSE1 is a smart air conditioner with a variety of features that can be controlled via a smartphone app. With the app, you can turn the air conditioner on or off, adjust the temperature, set the fan speed, and even set timers to turn the air conditioner on or off at specific times. The air conditioner also has a sleep mode, which will automatically adjust the temperature and fan speed to create a more comfortable sleeping environment.