Warm tips: This garage door remote control is a replacement, not an original accessory. Please check the compatibility list below before purchasing. Garage remote control replacement: This 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, and 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). Portable design: Its compact size allows it to be attached to a keyring using the included key ring for convenient everyday use. Note: Slight color variations may occur due to different production batches; this does not affect functionality. Color: As shown Material: Plastic Package contents: 1 × Garage remote control Note: Light reflection and display differences may cause slight color variation between the image and the actual product. Measurement tolerance is ±1–3 cm.