This is a completely configurable item pulse generator. Here is the list of items for the dispenser with the associate pulses:
Items | Pulses
0 = 14
1 = 13
1.5 = 12
2 = 11
3 = 10
3.5 = 9
4 = 8
4.5 = 7
5.5 = 6
6 = 5
6.5 = 4
7.5 = 3
8 = 2
8.5 = 1
9 = 0