Liftmaster TX2EV/TX2EVS/TX4EV/TX4EVS/TX4UNI/TX4UNIS 433.92MHz Garage Door Remote Control Duplicator Door Opener Compatible with: LiftMaster TX4UNIS Liftmaster TX2EV TX4EV LiftMaster TX2EVS TX4EVS Liftmaster TX2REV TX4REV Specifications: 1. Number of channels: 4 2. Code: rolling code and fixed code 3. Frequency: 433MHz, 433.92MHz 4. Battery: CR2032 5. Size: 60*30*12mm 6. Color: Black + silver Up to 4 different remotes in ONE ! Every button can be programmed as a replacement for a different brand, so using only one transmitter you can control up to 4 devices from different producers. Programming type: clone the original remote control, after cloning, you need to program on the receiver Easy to use This is a clone remote control, it needs to clone your original remote control face to face. If your remote control is a fixed code, after cloning, the new remote control will work. If your remote control is rolling code, after cloning, the new remote control needs to be programmed / activated on the receiver, the new remote control works. I will provide you with detailed instructions in the package, it is a card. Include Remote Control Battery Keychain English Manual