LG LMNC186TEA0 is a multi-type air conditioner cassette type indoor unit. It has an on/off light, a filter light that turns on after 2400 hours of use, a timer light, a defrost mode light, and a forced operation light. This air conditioner is designed to cool and dehumidify the air in your home, and it can be used in both residential and commercial applications. It is a powerful and efficient air conditioner that will help you to stay cool and comfortable all year long.