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 before purchasing. How to program? Deleting a code: To delete a code, press and hold the learn button or the code button on the receiver until the first light starts to flash slowly and then lights up until another light comes on. This indicates 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 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 remote is pressed. Color: Photo Color Material: Plastic Package Contents: 2x Garage door openers Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3cm.