source : http://indiantempledirectory.com
Lord Vinayaga is the Lord of wisdom, As Vinayagar satisfies the wishes of his devotees like Karpagam tree, he is also known "Karpaga Vinayagar". Here Lord Vinayaga appears with 2 hands unlike in other places where he is seen with 4 hands. Also he is seen seated without Angusapasam, with his legs folded and stomach not touching the Asanam in the form of "Artha Padma" Asanam. The word Vinayaga means "Incomparable Leader" Devotees worshipping Valamburi Vinayagar seated facing towards north, will be blessed with all wealth.
source : http://pillaiyarpattitemple.com
