Re: GE Devices

[Nomen Nescio <nobody@xxxxxxxxx>]

Mike Sokoly said:

>I guess that I hold out that amidst the sewage there is someone's gold
>at the bottom that might just be beneficial. I really get irritated by
>indivduals that are self-aggrandizing, self-proclaimed experts; and I do
>confess that at times I do fly-off the handle. My apologies. I guess my
>expectations from posters are more on the line of -" let's help each
>other out". No need for ME to sell anything or boost my ego at others
>expense- and I assume to expect that perhaps people who DO misinform
>others should not INFORM to begin with. I realize USEGROUPS are a
>crapshoot- anybody can and will say what they want-Perhaps those of us
>who HAVE credentials(whether experience or "sheepskins")to back up our
>advice should "put our money where our mouth's are".

I'm glad you feel that way.  I'm not out to make anybody look bad, but
let's remember how this all started.  You said:

>No Jim- They wireless technology is also 10-20 years behind.
>Rotating/rolling codes?
>Not in Ademco or Napco Stuff.

I then proved to you that Ademco wireless does in fact offer rolling codes
in its 5881EN wireless receivers.  That's a fact, not a personal attack.

>GE, although it states ELM Technology; it is NOT rolling codes.

I've asked you several times now to explain what ELM technology is, if not
rolling codes.  It's a sincere question, and I cannot find any better
explanation on the web.  I've already admitted that I don't know much about
GE/ITI wireless.  Now, if you want to help out, how about sharing your
knowledge with the rest of us poor slobs and answering this simple
question:  what is ELM technology, if it isn't rolling codes?

>Keyfobs from GE and some other Companies are not Supervised!
>Think about why?

Well, duh!  It would be pretty stupid to have supervised keyfobs when you
know full well that people are going to be taking the keyfobs away from the
premises.  Who would want a trouble signal telling you that a keyfob is no
longer transmitting check-in signals?  A low battery signal is useful, but
a supervisory signal is not.  Supervised wireless is for transmitters that
will remain on the premises.

>I guess my expectations from posters are more on the line of -" let's help
>each
>other out".

I'm all for that.  I openly admit I don't know everything, and I'm all for
learning from people who know something I don't.  And I can pretty much
guarantee you can learn some things from me, too.  Let's show each other
some mutual respect.

However, that doesn't mean I'm not going to ask pointed questions.

You've said that GE/ITI wireless uses rolling codes for door/window
transmitters and motions, but not for keyfobs.  I can't find anything on
the GE website that indicates that is true.  Your statement  defies all
logic, as far as I can see, and therefore I question its accuracy.

If there is one component in a wireless system that needs rolling codes, it
is the keyfobs.  Why?  Because if the keyfob always transmits the same
signal to disarm the system, then at least theoretically, someone can
capture that signal, duplicate it, and disarm the system.

On the other hand, what good does it do to have rolling codes for a
wireless motion?  If the code doesn't roll and the bad guys capture the
signal and duplicate it, they will cause an alarm when they retransmit that
signal.  Theoretically, they could cause false alarms, but they can't
defeat the system.

So, as I see it, it would be incredibly stupid of GE/ITI to design door
transmitters with rolling codes, but not design keyfobs with that feature.
And I have never seen any indication that ITI is stupid.

Now, I'm writing all of this to give you some details on what I don't
understand and why, not to attack your credibility.  Since you are more
familiar with the GE/ITI product line than I am, I'm sure you have
sensible, logical explanations for these questions.  I'll summarize:

1.  What, exactly, does "ELM technology" mean, if it doesn't refer to
rolling codes?

2.  Can you point to any GE/ITI documentation I can read that says their
door transmitters use rolling codes?

3.  Can you explain to me why door transmitters and motions would use
rolling codes, while their keyfobs do not?

>Perhaps those of us
>who HAVE credentials(whether experience or "sheepskins")to back up our
>advice should "put our money where our mouth's are". We can offer
>advice, help, and Constructive criticism via debate and postulation, not
>by bickering.

I'm not some DIYer.  I've been in this business for over 30 years, and I'll
match my credentials against yours anytime.  All I would like from you is a
reasonable explanation for your statements, and some evidence to support
your claims.  Fair enough?

- badenov