3 Styles for Normstahl / Crawford 433 Garage Door Remote Control – Rolling Code Features: 1) Compatible with Crawford garage door openers. 2) Number of channels: 4 or 2 3) Frequency: 433.92 MHz 4) Battery: 12V 27A / CR2032 5) This is a third-party remote control, not manufactured by Crawford. Compatible Models: 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 Transmit Distance: 25–50 meters in open space. Open space means no interference — no walls, doors, trees, or other obstructions. Interference from garage doors, brick walls, or similar structures may significantly reduce range. New Remote Programming Instructions: 1) Open the courtesy lamp cover to expose the “Learn” or “Code SET” button. If not visible there, check the rear of the motor head. 2) Press the “Learn” button (LED indicator will glow solid). 3) Press the remote button you wish to assign to the door — LED indicator will turn off. 4) Press the same remote button again — LED indicator will flash rapidly; programming is complete when flashing stops. 5) Close the courtesy lamp cover. Package Includes: Remote Control Battery Keychain English Manual