I used to use a Pronto RU940, but now use the MX-3000. I've been programming it for the last week or two and got round to the home automation side of things. I just got the IR7243AH and found the X10 codes available didn't work for me. I uploaded the codes for the Pronto and then " learned them" to the MX and thought that maybe someone else might use them. I have tested them with my setup, but, these may not work with yours.