This garage door opener is a replacement remote, not the remote, but it functions the same as the remote. Garage door handheld remote has a very compact size that fits very easily in your pocket, bag, or backpack, and it has a built-in key fob to hang on your key ring. Type of programming: self Copy Number of channels: 2 Product parameters Frequency: 303MHz Code: rolling code Keys: 2 keys Compatible list:for Guardian 2211L Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:As Shown Material:Plastic Package Contents: 2 * Garage Door Opener Remote 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.