I was unable to get this to work with batch files with your syntax and tried other variations but x10 commander never sent the command. I ended up using the on command line and the off command line in the TRIGGERcmd GUI to issue the CURL commands and using~sendrf~ in the syntax for the X10 CM19a. But the overall syntax worked. I also used the actual IP address of the WINPro PC that is running Windows 10.