[Warm Tips] This garage door remote control is a replacement. We recommend that you check the compatibility list below before purchasing. [Garage Remote Control Replacement] This garage remote control operates at 433.92 MHz with Rolling Code technology and is compatible with Crawford RCU 433-4K, RCU 433-2K, EA433 2KM, EA433 2KS, EA433 4KS, N002800, and T433-4. [Compatible Garage Opener List] This remote control works with Crawford Entrematic Magic 600, Magic 1000, Ultra (all versions after 2005), and Ultra Excellent (all series after 2005). [Compact and Portable] Its compact design allows it to be attached to a keychain using the included key ring for convenient portability. Color may vary slightly between production batches but does not affect functionality. Color: As shown in photo Material: Plastic Package Contents: 2 x remote controller Note: Lighting conditions and screen settings may cause slight color differences between the image and the actual product. Measurement tolerance is ±1–3 cm.