12pcs Lock Button Remote Control Backup Key Fob 433MHZ Sliding Gate Operator BRAND NEW ITEM FREE SHIPPING Compatible with Most Chips: this gate remote control duplicator is compatible with 2264/ 2260/ 1527/ FP527/ 2240/ SMC918, etc., and the chip model of the electric door is 433.92 Mhz; Please confirm your chips before ordering Methods to Duplicate: after clearing old codes, you need to place the universal remote for gate opener and old remote control side by side, and press the A button, then press the corresponding button of the old remote control to copy, the LED indicators will flash about 3 times before you can let go, and other keys accordingly Easy to Clear Old Codes: simultaneously long press the A and B key on the gate opener remote until the LED indicator keeps flashing, then you can let go, you could press any keys to test, if the LED indicator blinks instead of keeping flashing, which means codes have been cleared 4 Keys to Control: there are 4 keys on the universal gate opener remote, to open, close and stop, convenient and practical, which is suitable for rolling shutter door, rolling gate, telescopic door, garage door, road gate and more Sufficient Quantity: there are 12 pieces of remote control for gates in the package, with the lobster clasp, so you can hang them around your clothes, pants, bags and more, easy to carry; Enough quantity to meet your uses and replacements