Loop my script for my doorbell

I got my wireless door bell to ring(after a month of trial and error) once with this script: d.RFxmit("\x8E\xE8\xE8\x88\x88\xE8\x88\x88\x00\x00\x00" * 40)
I want to make it ring continuously. What do I need to do to the above line? I am new at programming so please be specific. It took me over a month to figure out how to make it ring.
Thank you.