Easy Install - you need set the same DIP Codes on the transmitter and receiver. They are hidden behind the slot for the battery itself. There are total 16 different frequencies to avoid mutual interference. It is easy to use according to our instructionsCeiling Fan Remote - It is only a transmitter. This package does NOT INCLUDE a receiver or 9V battery. There are total 16 different frequencies to avoid mutual interference. If your original transmitter looks different from this product, please purchase a complete kit with a receiver in our storeFan 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 some dimmable LED lamps. Most LED/CFL lights are non-dimmable, and the remote only control ON/OFF function in this caseUniversal AC Ceiling Fan Remote - This remote controller is designed for 3-speed ceiling fan to separately control your ceiling fan speed and light brightness. There are four buttons (HI, MED, LOW, OFF) to control the speed of the fan and off. NOTICE: Without reverse function; Do not work for DC fanBuy with Confidence - The product includes a universal remote control, we provide lifetime support, if you have any questions or concerns, please feel free to contact us, we will reply you within 24 hours and provide you with a satisfactory solution