Programming type: Programming with receiver button: 1 Button Frequency: 433.92MHz 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) Receiver access required. Please ensure you have access to the receiver/opener before purchasing. How to program? Erase a code: To erase a code, press and hold the learning button or code button on the receiver until the first LED flashes slowly and then lights up until another LED lights up. This means the code has been erased. 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 opener will flash, confirming successful programming. The opener will now operate when the button is pressed. Color: Photo color Material: Plastic Package contents: 2 x Garage door opener Only the above package content; other products are not included. Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the actual product. Please allow +/- 1-3 cm measurement error.