Power supply for ThinkVision LT1423p wireless monitor?

Does anybody have one of these wireless monitors that can give me the information off of the original 12V power supply that came with yours?

I found a Lenovo manual online that says the power supply to use is the "PI Electronics (H.K) Ltd. 51J0249". I then found one on ebay that would not ship to Canada. So I got an Amerifriend to buy it and ship to me. The darn thing has the wrong sized tip on it.

Or knowing the output voltage / amperage and tip configuration would help me find a compatible power supply.

Thanks