100% New and High Quality Code cleaning method: Press the unlock button and lock button at the same time (some models use the up button and down button). After the LED indicator light flashes three times, release one button while continuing to press the other. Then press the released button three times. The LED indicator will enter fast flashing status, indicating all memory data is cleared. The remote control will not light up when any button is pressed after clearing. Copy method: Hold the original remote in one hand and the copy remote in the other, placing them as close together as possible (ideally side by side with no gap). Press the copy button on both remotes simultaneously. When the LED flashes quickly after three initial flashes, the copying is successful. Repeat for other buttons. For remotes with lower transmission power, position the original remote close to the copy remote during operation. Avoid operating in noisy or interference-prone environments. If copying fails, clear the code and retry. Clear testing code before copying: Press the top two buttons simultaneously until the LED flashes three times quickly. Release one button while keeping the other pressed, then press the released button three times. Release both buttons after the LED flashes rapidly. If the LED does not turn on when any button is pressed, the code has been successfully cleared. Studying Code: Press and hold one button on this remote and the corresponding button on the original remote, keeping them close for 3 seconds. The LED will flash quickly and then stay on. Release the buttons. Press the copied button to test; if the LED lights up, the copy was successful. Repeat for other buttons. Recovery function: If useful codes are accidentally deleted, press the 3rd and 4th buttons simultaneously until the LED flashes quickly three times. Recovery is successful when completed. Easy to use 4-channel remote control system for controlling various devices, vehicles, home systems, and garage doors. This is not a complete list. Compatible with 433MHz fixed code remotes (rolling code remotes are not supported). Supports IC models 2262, 2260, 1527, 2240, and compatible types. Uses 27A 12V battery; replace when signal range decreases. Can clone up to 4 remote signals from different remotes. Works with 433MHz fixed code key fobs. Suitable for cars, garage doors, gate doors, alarm systems, and other RF-controlled devices.