The opendrw.exe is an easy tool to send the command to DT105 under command prompt mode.

[Usage]
Opendrw.exe COMx [epsonmode|epsonmode2|starmode|citizenmode|hskmode|checkstatus|hexbytes] 

Here is an example of sending EPSON mode command to DT105:
C:\>opendrw.exe COM1 EPSONMODE

Here is an example of sending EPSON mode command with Open Time (200ms) to DT105:
C:\>opendrw.exe COM1 EPSONMODE 100

Here is an example of sending check status command to DT105:
C:\>opendrw.exe COM1 CHECKSTATUS

Return Code: 1=Open, 0=Close, -1=Error.

[Install]
Copy opendrw.exe from CD to Windows path.
