Ha ha, Now wasn't that a good guess, almost "exactly the same as mine", My automation controller already supports that Rf protocol.
The chip in this is labelled 433.92mhz.
That is not the chip, that is called the Saw Resonator, the chip is on the other side.
I don't suppose you know the correct IR codes that the powermid might put out as the correct RF? See if it works before I pick up one of your boxes!
I don't know the correct IR codes, because I have never bothered trying the method you are proposing,
take a picture of the chip and send it to me, I'll see what I can do.