Important Notice: These color changing MR16 LED bulbs are designed for landscape lighting use ONLY!. They are not supposed to be used in indoor lighting where they could not work properly. Please check before purchasing.Instructions:It could not work with the wall dimmers. The 4-level brightness could only be operated on our remote controller provided.If the remote controller could not work, please check if you have pulled out the insulator sheet on the bottom of the remote controller.The remote controller needs to point directly to control the bulb and there are no obstacle between them . You could try it in different angles or directions to point to the bulbs.If you met any problem, please feel free to write us an email, our customer service would make it right for you as soon as we can.Features:-16 Colors. Warm White+15 RGB Colors-4-Level of Brightness and 4 Color Changing Modes. 4 Level of brightness for each color via a remote controller we provided, from super bright to dimness, meets your various decorative lighting needs.4 Lighting Modes. Flash/Strobe/Fade/Smooth, you can set the right ambiance for any moment you wanted.-Memory Function. It has a memory function that means it can memorize the last color or mode setting when you turn it on next time.Bulb Specifications:LED Power: 5WLamp Base: MR16Input Voltage: 12VAC/DCColors: Warm White+15 RGB ColorsLifespan: 30,000HoursIR Remote Controller Specifications:Remote working distance: 0-16ftTurn ON/OFFAdjust Brightness.Up and Down.16 Colors Options.4 Color Changing Modes - flash, strobe, fade, smoothFLASH: rapid automatic colors changeSTROBE: slow automatic colors changeFADE: colors fade rapidly from one to anotherSMOOTH: colors slowly fade from one to anotherPackage includes: 3x MR16 Led and 1xRemote Controller