First is the price of the product, saying that there was no risk in trying this purchase. When I received it, it was promising. When I've used it was perfect. As I am an amateur programmer, I struggled a bit to activate the keypad, but on my way to the vendor's site a tutorial me well explained the maneuver to follow (it would suggest that journey to help philistines ...) In summary, an unbeatable price, reliable product, rapidity in the delivery what better !!!
