Fan Remote with Light Dimmer ? The green button is for dimming function, luminous feature of it can help you find the remote control in the dark. Light dimmer compatible with incandescent light bulbs and dimmable LED/CFL lamps. Some LED lights are non-dimmable, light dimmer only supports the ON/OFF function in that case, and it may cause to flicker when using the dimming function. Fan button controls 3-speeds (high/medium/low) Please note that the receiver does not have the function of Reverse.Light dimmer button just controls the brightness of the incandescent lights,if your light is LED, only control the LED’ on/off. DIP CODES SET - Look inside the old remote with the battery cover off. There is a series of 'DIP' switches(4). Use a pen, slide the switches in the new remote to match the same pattern as the old remote. As long as the fan has the receiver (must have same dip switches too). Replace the battery in the new remote and things should work. If you have multiple ceiling fans in your home, please make sure that the PIN code settings are different between them, NOTE: If you have PULL CHAINS SWITCH, before using the wireless remote control, use the PULL CHAINS SWITCH to turn the wind speed to maximum and turn the fan light on. Only in this way can the PULL CHAINS SWITCH and wireless remote control be used together. Compatible devices: Home Theater