Type of programming: programming with the 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 the receiver is required Make sure you have access to the receiver\/opening before purchasing How to program? Deleting a code: To delete a code, simply press hold the learn button or the code button on the receiver until the first light starts to flash slowly then lights up until another light lights up This means the code has been deleted 1 Press the programming button on the motor The LED will light up 2 Press the desired button on the new remote control 3 The light on the door opener will flash, confirming successful programming The door opener will now work when the button on the Colour:Photo Color Material:Plastic Package Contents: 2x Garage door openers Only the above package content, other products are not included Note: Light reflection different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is and\/- 1-3cm