Programming type: 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 the receiver is required. Please ensure you have access to the receiver/opener before purchasing. How to program? Delete a code: To delete a code, press and hold the learning button or code button on the receiver until the first light starts to flash slowly and then lights up continuously until another light turns on. This means the code has been deleted. 1. Press the programming button on the motor. The LED light will illuminate. 2. Press the desired button on the new remote control. 3. The light on the gate opener will flash, confirming successful programming. The gate opener will now work when you press the button. Color: Photo color Material: Plastic Package contents: 2x Garage door opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement error is +/- 1-3 cm.