433MHz ASK power remote car key replace for Audi A4 S4 AA4C A4Q RS4

Detail:

433MHz ASK
48 CHIP
8E0 837 220Q
8E0 837 220K
8E0 837 220D
Compatible Battery: CR2032

Work On：

A4, S4 Cabrio (AA4C): 2007-2009
A4, Avant (A4): 2005-2008
A4, S4, Avant, Quattro (A4Q): 2005-2008
RS4 Avant, Quattro (RS4): 2006-2008
A4, S4, Avant, Quattro (A4Q): 2005-2008