The most accurate way to send us the Red Key serial number is to read it from the StratIS app. Go to Reports -> Get Key Info and read in the key. The app will say "Key Not Known", but we will be able to get the log of the key serial number, or you can write down the serial number it shows.
Alternatively, you can read the serial number from the ibutton manually.
The Red Key's serial number is engraved on the ibutton face. See diagram below:
This key's serial number is 89 000000 FBC52B 01. Your Red Key serial number should end in '04'