Warm tips: This garage door remote control is a replacement, not an accessory. We recommend checking the compatibility list below before purchasing. Garage remote control replacement: Our handheld transmitter operates at 433.92 MHz with rolling code technology and is compatible with Crawford standard steel models RCU 433-2, RCU 433-4, EA433 2KM, EA433 2KS, EA433 4KS, N002800, T433-4. Compatible garage opener list: This remote works with Crawford Entrematic Magic 600, Magic 1000, Ultra (all versions after 2005), and Ultra Excellent (all series after 2005). Compact and portable: Thanks to its small design, the remote can be attached to your keyring using the included key ring, keeping it easily accessible. Note: Due to different production batches, slight color variations may occur, which do not affect functionality. Color: As shown Material: Plastic Package Contents: 1 x Garage Remote Control Note: Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement error allowance is +/- 1-3 cm.