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: 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, and T433-4. Compatible garage opener list: Works with Crawford Entrematic Magic 600, Magic 1000, Ultra (all versions released after 2005), and Ultra Excellent (all series released after 2005). Portable design: Compact size allows attachment to a keyring (included) for convenient carrying. Note: Slight color variations may occur between batches; this does not affect functionality. Color: As shown Material: Plastic Package contents: 1 × Garage remote control Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.