Compatibility -- This remote can copy 99% fixed code or learning code, but cannot copy rolling code. Supported chip codes are shown in the product photo or . Latest RF Technology -- A radio remote control transmits and controls signals through radio waves. Non-directionality and long transmission distance. The latest RF technology guarantees a better transmission range. Protective Design -- The sliding cover prevents accidental pressing of the button when you keep 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 keys) on the handheld transmitter. Each button can be programmed for 4 different brands of remote controls. This means that this remote can control up to 4 devices. Easy to Use -- The programming manual contains the operation steps for erasing, copying and restoring the code. The manual is easy to follow and use. You don't have to worry about overly complicated procedures.