I can’t imagine what kind of response you might get from the manufacturer. I’d be surprised they give you specific details about their design. They would have to tell you what kind of encoding they’re using or perhaps what components they’re using to do the encoding.
As I said in my previous post you would have to purchase an RFXtrx433e or RFXtrx433XL. This device encodes/transmits and receives/decodes messages in the 433.92 Mhz band. It communicates these through a USB connection to the Vera hub.