Product Description: Ships within 24 hours (excluding holidays). Compatibility List: Normstahl / Crawford EA433 2KS Normstahl / Crawford EA433 4KS Normstahl / Crawford RCU433-2 Normstahl / Crawford RCU433-4 Normstahl / Crawford N002800 Crawford N002800 Normstahl / Crawford N002800 433-4 Three options are available: 1. Programming Type: Programming with the receiver 2. Number of Channels: 4/2 3. Code: Rolling code 4. Frequency: 433.92 MHz 5. Battery: 27A 12V/CR2032 6. Size: Style1 53*27*12mm Style2 70*30*13mm Style3 55*45*8mm NEW Remote Control Programming: 1) Open the cover of the invitation light to expose the Learn or Code SET button, otherwise it is on the back of the motor head. 2) Press the Learn button (* LED indicator lights up quickly) 3) Press the remote control you want to control the door with - LED indicator turns off 4) Press the same remote control button again - LED indicator starts flashing quickly, programming is complete when LED indicator stops flashing 5) Close the cover Includes: Remote control, Battery, Keychain, English manual When shopping, please pay attention to the product's size and dimensions to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please do not hesitate to contact us. We are here to help you and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it! Color style1 Buying our products not only means owning high-quality goods, but also enjoying our meticulous customer service. Our customer service team is ready to provide you with assistance and support.