This is a pre-owned, fully tested 315MHz OEM immobilizer.  It comes with the factory 4-digit PIN code you need to program fobs - either Porsche OEM or our upgraded F1 fobs.  Note that Immobilizers available on EBAY rarely come with the PIN or a programmed fob, making them an expensive paperweight.  It has had upgraded receiver capacitors installed that restore the immobilizer to full factory-specified range and reliability.