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, then remains lit when another light turns 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 operate when the button on the remote is pressed. Color: Photo Color Material: Plastic Package Contents: 2 x Garage door openers Only the above package content is included; other products are not included. Note: Light reflection and different display settings may cause slight color variations between the item and the image. Measurement error allowance is +/- 1-3 cm.