This garage door opener remote is a replacement device that functions similarly to the original remote. The handheld remote has a compact design, making it easy to carry in your pocket, bag, or backpack, and includes a built-in key fob for attachment to a key ring. Programming type: Self-copy Number of channels: 2 Frequency: 303MHz Code type: Rolling code Buttons: 2 Compatible with: Guardian 2211L Note: Installation guide is not included. Professional installation is strongly recommended. Please verify compatibility to ensure this item meets your needs. Product may vary slightly between batches, including minor design or color differences, which do not affect functionality. Color: As shown Material: Plastic Package contents: 2 x Garage door opener remote Only the items listed above are included; other accessories are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.