Smitty Two wrote:

One, alarm people don't know what the hell they're talking about. Words
become meaningless when one group of people decide to throw out the real
definition and use their own.

Smitty,

Alarm people 'do' know what they're talking about. You can blame the
manufacturers for the vernacular confusion, but 'alarm people" know.

Come on over to alt.security.alarms for further discussion if it bothers
you. I'm sure some of my colleges can define the reason better than I.