... 123456".knock 1 time to setup first digit"1",LED response 1 time;after 5 seconds LED keeps lighting 1. ... step.knock 2 time to setup second digit"2",LED response 2 time;after 5 seconds LED keeps lighting 1. ... .knock 4 time to setup fourth digit"4",LED response 4 time;after 5 seconds LED keeps lighting 1. ... step.knock 6 times to setup sixth digit"6",LED response 6 time;after 5 seconds LED keeps lighting 10 ...