This is a fixed and rolling frequency remote cloner (433.92MHz) designed to copy most common fixed and learning code remote controls. Compatible with Most Chips: these 433MHz automatic sliding gate opener remotes are compatible with 2264, 2260, 1527, FP527, 2240, SMC918, and similar chip models. Please confirm your remote's chip type before ordering. Easy to Duplicate: after clearing the existing code, place the universal gate remote and the original remote control side by side. Press and hold the corresponding button on both remotes simultaneously. The LED indicator will flash three times to confirm successful copying. Repeat for other buttons as needed. Clear the Old Code: press and hold keys A and B on the automatic electric door opener remote simultaneously until the LED indicator flashes continuously, then release. To verify, press any button; 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 driveway gates. You Will Get: 4 x universal gate opener remotes (each includes battery and instruction manual), equipped with lobster clasp for convenient attachment to clothing, bags, or belts. Color: as shown in photo Material: metal Package Contents: 4 x garage door opener remote 1 x English instruction manual Note: light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.