Compatibility -- This remote control can copy 99% fixed code or learning code, but cannot copy rolling code. Supported chip codes are shown in the product image or product description. Latest RF Technology -- A radio remote control transmits and controls signals via radio waves. Non-directional and long transmission distance. The latest RF technology ensures a better transmission range. Protective Design -- The sliding cover prevents accidental button presses when you store the remote control in your pocket or purse. A blue protective film is attached to the remote control to protect against scratches. Multi-Channel -- There are 4 buttons (ABCD buttons) on the hand transmitter. Each button can be programmed for 4 different brands of remote controls. This means this remote control can control up to 4 devices. Easy to Use -- The programming manual includes the steps to erase, copy and reset the code. The manual is easy to follow and use. You don't have to worry about overly complicated procedures.