This is a fixed and roling frequency remote cloner (433.92mhz) for copying 99.99% 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 a button, then the corresponding button to copy the old remote control, LED indicator flash 3 times to let go, and other corresponding keys Clear the Old Code: 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 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 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.