This is a fixed and rolling frequency remote cloner (433.92MHz) for copying most common fixed and learning code remote controls. Compatible with Most Chips: these 433MHz automatic sliding gate openers are compatible with 2264, 2260, 1527, FP527, 2240, SMC918, and others. Please confirm your chip type before ordering. Easy to Duplicate: after clearing the old code, place the universal gate controller and the original remote side by side, press and hold the corresponding button on both remotes until the LED flashes three times, then release. Repeat for other buttons as needed. Clear the Old Code: press and hold keys A and B on the automatic electric door opener simultaneously until the LED flashes continuously, then release. Press any key to test; if the LED flashes briefly instead of blinking continuously, the code has been cleared. 4 Keys to Control: the remote features four buttons—A, B, C, D—for opening, closing, and stopping gates or doors. Suitable for use with rolling shutter doors, telescopic doors, garage doors, and road barriers. You Will Get: 4 x universal remote gate openers (includes battery and instruction manual), equipped with lobster clasp for convenient carrying. Color: As shown in photo Material: Metal Package Contents: 4 x Garage door opener remote 1 x English instruction manual Only the above package content is included; other items are not part of this package. Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement may vary by +/- 1-3 cm.