Remote Control 433MHz Wireless Copy For Universal Garage Door Electric Door Key Lamp Battery Car Remote Control Introduction YiFanHeRong SOS-KB circular random single-button copy remote controller adopts brand single-chip microcomputer independent programming, supports online programming, can be repeatedly written, built-in EEPROM, can copy other ordinary remote controllers of the same frequency, can clear code and learn code at any time, easy to use, fast, and can be used in the fields of car remote control, lighting control, smart home remote control, etc. Product Characteristics (1) Operating frequency: 433MHz ; (2) Battery type: 3V button battery 2032 * 1; (3) Working mode: copy; (4) Shell material: ABS; (5) Product size: 44.8 * 44.8 * 13mm (including shell); (6) Net weight of product: 17g How to use (1) Copy code checking operation Press the single button of the copied remote control and the copy remote control at the same time, until the copy remote control indicator light flashes from fast to constant, indicating that the copy is successful, then release the two remote control buttons. (2) Clear code operation Press and hold the key on the remote control for 4 times until the indicator light changes from constant light to flashing and then to constant light, indicating successful code clearing. Release the key after success. Package included 1 xCopy Remote Control (with battery) Note: 1.We don't offer retail package,but we will pack it well before shipped out. 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you buy. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!