SODIAL(R)Flip Replacement Remote Car Key Case Shell for CITROEN C2 C3 C4 C5 C6 C8 2 Buttons Black This item isn't a remote key and it is just a remote key shell case replacement. Key case and uncut key blade only. Not electronic internals. Best replacement for a key with broken buttons or worn key case. There is NO interior (remote/electronics/transponder chip)unit inside.