How do you set the time delay on the AVTMOD05 module?

Hello.

I need some help with a ready-made AVTMOD05 device.
The device isn’t perfect or particularly stable, but I need help modifying this module so that I can set a time delay for switching the output(s).

Has anyone else had a go at something like this?
Link to the device:
http://sklep.avt.pl/p/pl/485819/emodul+io+sterowany+przez+siec+ethernet.html