Some of the extended commands are the "Product Data Response" which all Insteon devices are supposed to eventually support. This command is a response to a standard Insteon message requesting device info such as product key and device category. There are also "Block Data Transfer" commands which will replace the current method of working with links through software (peek/poke a single byte at a time). Extended commands will greatly speed/enhance software linking. Extended commands also exist for advanced programming such as the KPL XOR button programming, etc.
Glad that you find PowerHome useful and appreciate your support. Look for more improvements in the future.
I was reading through this thread and didnt see any mention of it so thought I would bring it up. I know it's easy to focus on the negative so thought that I could at least bring forth something positive.
If SH wasnt so secretive there would probably be less negative. I can live with a few extra bucks to trade something in for a better version but then the products do not work as described and all of the QC problems and price increases etc its frustrating.