Specifications Encoding method:Rolling code Hign-concerned Chemical:None Origin:Mainland China Certification:CE Normstahl / Crawford Garage door remote control 433MHz rolling code It is 100% compatible with the following 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 NORMSTAHL EA433 2KM Specifications: Product Model: NORMSTAHL Type of programming: Programming with the receiver Product material: ABS Size: 53*27*12mm Product weight: 40 g Number of channels: 2 Battery: 3V (CR2032 Include) Installation: wireless Code: rolling code Frequency: 433MHz, 433.92MHz Radio transmission distance: 20-100m (Open area) Special Note: 1. This remote control is only compatible with the model advertised. 2. No original goods, but 100% perfect fit. 3. If you have any questions, please feel free to contact me,I can recommend suitable products to me. Specifications: Product Model: SMG-240-NORMSTAHL Type of programming: Programming with the receiver Product material: ABS Size: 55*45*8mm Product weight: 40 g Number of channels: 4 Battery: 3V (CR2032 Include) Installation: wireless Code: rolling code Frequency: 433MHz, 433.92MHz Radio transmission distance: 20-100m (Open area) How to program this replacement remote control: 1) Press the programming button on your motor. The LED will go on. 2) Press desired button on the new remote control. 3) The opener light will flash, confirming successful programming. Now the opener will operate when the remote control push button is pressed. To erase all codes from the receiver, hold the receiver's Learn button until the indicator light goes off (after 30 seconds). All codes that the receiver has learned will be erased. Include: * Remote Control * Battery * Keychain * English Manual Disclaimer: Scimaig-RC distributes remote controls which are compatible with the door or garage motors and receivers produced by other manufacturers, and which are substitutes for remote controls produced by those manufacturers. All trademarks and registered trademarks are the property of their legal owners and are used here only for the description or identification of the devices. Except where a product is expressly stated to be a "genuine" remote, our remote controls are not produced by, and are not authorised, endorsed or approved by these other manufacturers.