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 or opening befe purchasing. How to program? Deleting a code: To delete a code, simply press hold the learn button 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 mot. The LED will light up. 2. Press the desired button on the new remote control. 3. The light on the do opener will flash, confirming successful programming. The do opener will now wk when the button on the Colour:Photo Col Material:Plastic Package Contents: 2x Garage do openers Only the above package content, other products are not included. Note: Light reflection different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.