Styles for Normstahl / Crawford 433 Garage Door Opener Remote Control Rolling Code Features: 1) Compatible with: Crawford garage door opener. 2) Number of channels: 4 / 2 3) Frequency: 433.92Mhz 4) Battery: 12V 27A /CR2032 5) This is a third-party remote control. NOT made by Crawford. Compatible model: Normstahl / Crawford EA433 2KS Normstahl / Crawford EA433 4KS Normstahl / Crawford RCU433-2 Normstahl / Crawford RCU433-4 Normstahl / Crawford N002800 Normstahl / Crawford EA433 2KM Micro Normstahl / Crawford T433-4 Transmission distance - 25-50m in open space. Open space means no interference. No walls, no doors, no trees or other obstacles. Interference such as garage doors or brick walls can significantly reduce the remote control's range. Programming new remote control: 1) Open the inner light cover to expose the \"Learn\" or \"Code Setting\" button. Otherwise, it is on the back of the motor cover. 2) Press the \"Learn\" button (* The LED indicator lights up constantly) 3) Press the remote control button you want to control the gate with - the LED indicator turns off 4) Press the same remote control button again - the LED indicator starts flashing rapidly, programming is complete when the LED indicator stops flashing 5) Close the inner light cover Includes Remote control Battery Keychain English Manual Professional Certificate, Quality Assurance