The Keystone 5000 BTU window-mounted air conditioner with Follow Me remote control is perfect for cooling a room up to 150 square feet. It has electronic controls with LED display and a temperature sensing LCD remote control allowing you to conveniently see set and maintain the room temperature from across the room. Money saving features include energy saver mode sleep mode and a programmable 24-hour timer. Plus quiet operation (50.5 dBA on low) helps you get a good night's sleep.