I have a command file with this format:

```
31 01 FD 37 04
31 01 FD 37 05
31 01 FD 37 06
31 01 FD 37 07

```

This commands are in ASCII but i have to send my device same numbers just in HEX
so: *31 01 FD 37 04* **->** *31 01 FD 37 04* **NOT(33 31 30 31 46 44 33 37 30 34 )**

Any idea?