[Multi functional 4-in-1 function] - This device allows you to clone up to four remote buttons from the same or different remote controls. Its versatility and customizable nature that you always have a backup remote control or key available in case of loss. It is compatible with devices, including wireless remote control, car keys, and garage door opener. Before placing an order, please confirm the compatibility of the chip. Convenient Code Clearing Process - Clearing code is a simple process. Press and hold the A and B keys simultaneously for three seconds. Then, while continuing to hold the B key, release the A key, and then press the A key 3 times. The LED indicator light will quickly flash, indicating that the code clearing process has been completed. Easy to use code duplication - Copying code for this device is effortless. Press and hold the desired button on our remote control, while also pressing the corresponding button on the remote control. Bring the remote control to the metal part of the cloned remote control. The LED light will flash and remain continuously lit. Attempting to press this button will turn on the LED light, indicating that you have successfully copied. Repeat the steps for the other buttons . Reliable data recovery - If unexpected data clearing occurs, simply press the specified key on the back of the remote control at the same time, and then repeat another remote control. This indicator will quickly blink 3 times to indicate successful data recovery. [Software Package Content] - The package includes four universal remote door openers, each equipped with a battery and instruction book. In addition, they are designed with lobster clasps, allowing you to easily hang them on clothes, pants, bags, and other items for easy carrying. The quantity provided is sufficient to meet your alternative needs. Colour:As Shown Material:plastic Package Contents: 4 x garage door openers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.