... the fan, three for controlling the fan speed, two for turning on/off the lights, and another “Timer” key for timed operationThe fan speed ... at HI, MID, and LOW respectively.Pressing Light ON/OFF key will turn on/off the lights, and the LCD display ... show corresponding “/ ”indicator.The fan can be timed using “Timer” key with a delay of 1, 2, 4, and 8 hours ...