This is a fixed and roling frequency remote cloner (433.92mhz) for copying 99.99 percent common fixed and learning code remote controls. Compatible with Most Chips: these 433Mhz automatic sliding gate opener are compatible with 2264, 2260,1527, FP527, 2240, SMC918, and so on Please confirm your chips whether suitable before ordering Easy to Duplicate: after removing the old code, you need to put the universal gate controller, remote control side by side, and press a button, then press the corresponding button to copy the old remote control, LED indicator will flash 3 times to let go, and other corresponding keys Clear the Old Code: press and hold the A and B keys on the automatic electric door opener at the same time until the LED indicator flashes continuously before releasing You can press any key to test, if the LED indicator flashes instead of blinking all the time, it means the code has been cleared 4 Keys to Control: there are 4 buttons on the remote controls for gates, A, B, C, D, are applied for opening, closing and stopping doors, which are convenient and practical You can use them for rolling shutter doors, rolling shutter doors, telescopic doors, garage doors, road doors You Will Get: there are 4 pieces of universal remote gate openers (include battery and instruction book), equipped with lobster clasp, which can be hung around clothes, pants, bags, etc. Colour:Photo Color Material:Metal Package Contents: 4 x garage door opener remote 1 x English instruction manual 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.