[Warm Tips] This garage door remote control is a replacement. We recommend that you refer to the list below for device compatibility before purchasing. [Garage Remote Control Replacement] Our garage remote control works with 433.92MHz Rolling Code and is compatible with Crawford RCU 433-4K, RCU 433-2K, EA433 2KM, EA433 2KS, EA433 4KS, N002800, T433-4. [Compatible Garage Opener List] Our garage door remote control is compatible with Crawford Entrematic Magic 600, Magic 1000, Ultra (all versions after 2005), and Ultra Excellent (all series after 2005). [Compact & Portable] Thanks to its compact design, the remote control can be attached to your keychain with the included key ring and is always at hand. The color of different production batches may vary but will not affect performance. Color: Photo Color. Material: Plastic. Package Contents: 2 x Remote Controllers. Only the items listed are included; other products are not included. Note: Light reflection and different displays may cause slight color differences between the image and the actual item. Measurement error allowance is +/- 1-3 cm.