You can use 15 resistors to determine which key code it is. I've listed the normal, low and high resistances with corresponding key pellet numbers.

1) 402, 386, 438

2) 523, 502, 564

3) 681, 654, 728

4) 887, 852, 942

5) 1130, 1085, 1195

6) 1470, 141... Login to read more.