The CHMSL is not Mopar-only, as far as I know it is a US Gov't acronym Probably from the safety wonks.

A fob is the thing on your key chain that opens the door by remote control.

10 years ago FOB stood for "friend of Bill"
It can also mean Free on Board but as you are talking about the key fob and not buying freight it is the key fob that derives from the watch fob as mentioned above.

R.