LG LT-D4820HL is a cassette type air conditioner that is designed to provide both cooling and heating. It comes with a wireless remote controller that allows you to control the unit from anywhere in the room. The unit also features a number of other functions, including:

• Auto swing: This function causes the air vanes to swing up and down, ensuring that the air is evenly distributed throughout the room.
• Jet cool: This function quickly cools the room by operating the fan at its highest speed.
• Sleep mode: This function gradually increases the temperature of the room while you sleep, ensuring that you stay comfortable all night long.