If you were supposed to get an email from the forum but didn't (e.g. to verify your account for registration), email Wes at stararmy@gmail.com or talk to me on Discord for help. Sometimes the server hits our limit of emails we can send per hour.
They are all used, I believe, in many ships - I differ because I don't group my sensors together.
For example I can not see a sensor here which is not within the MEGAMI package. I will remove those which have no explanation and are not used by other races.