Frequency
alternate steps:
1, Push both button Unlook and button Trunk the same time
2, The board will work as 315Mhz after light shine 3 times
3, The board will work as 433Mhz after light shine 4 times
Erase and Empty
the old data steps:
1, Push both button Lock and button Trunk the same time until the lamp light
2, Then push button Unlock to Erase the data.