Grandpa says if you have previously bought a vent from Adohen Supply he will give you my special discount of $10.00 off the price of the 6600r upgrade kit..  Please email him your  name and invoice number.  Here I am looking at the wall control for the NEW 6600r wireless control. Its fun and nice all at once. I like the lights that turn on when I press the buttons.  You will have to buy one from Grandpa to see what I can see.