1.Compatible IC chip: 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 2.Clear the Old Code: Press 'A' and 'B' at the same time, after the LED indicator light flashes three times, loosen any one of the buttons while the other is kept pressing, then push the released button three times, the LED indicator will enter into the fast flashing status. At this time all the memory data is cleared, the cleaned remote control will not have lighting LED indicator no matter which button you press 3.Easy to Duplicate: To put the two remote controls on the desktop side by side with zero distance, respectively press down the copy button, when the LED indicator light flashes quickly after three flashes, this copy is successful, other key operating methods are the same. Some remote control has a smaller transmitting power, so the original remote control should be placed back to the copy remote control to be operated. For the presence of noise, it should avoid interference to operate 4.4 Keys to Control: 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 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. Sold by-YJL official store