Cobra Alarm

[Nesty1760]

Hi

I have a old Nissan Micra, when purchased it came with 2 immobilizer dashboard fob keys, just like in the photo, ( I haven't been able to find the module yet), if it is this model.

Now, 1 key stopped working, so down to sole working fob, which I am keen to programme in another spare, before the sole one goes wrong.

I have purchased 2 new ones, but can't get the alarm into programming mode to accept them.

Has anyone got any knowledge of these alarms? thanks