Type of programming: programming with receiver Button: 1 button Frequency: 433.92 MHz Battery: built-in battery Range: 10m-50m (open space) Compatible models: 4330E(4330EML,G4330E.G4330)4332E(4332EML,G4332E,G4332)4333E(4333EML,G4333E,G4333)4335E(4335EML,HE4331,G4335E,G4335) Access to receiver is required. Make sure you have access to receiver/opening before purchasing. How to program? Deleting a code: To delete a code, simply and hold learn button or code button on receiver until first light starts to flash slowly and then lights up until another light lights up. This means code has been deleted. 1. the programming button on motor. The LED light up. 2. the desired button on new remote control. 3. The light on door opener flash, confirming successful programming. The door opener now work when button on Colour:Photo Color Material:Plastic Package Contents: 2x Garage door openers Only above package content, other products are not included. Note: Light reflection and different displays