Re: Unusual Challenge

[Jim Davis <alarminex@xxxxxxx>]

On Friday, October 22, 2021 at 4:13:26 PM UTC-4, ABLE1 wrote:
> On 10/22/2021 1:18 PM, Jim Davis wrote:
> > Re: The resistor. As I understand it, the closed circuit contact is wir=
ed from ground to the trigger terminal. Without a resistor, when the switch=
 opens, the trigger terminal just goes from negative to "float". When you a=
dd the resistor, which is wired to the positive terminal when the switch op=
ens, it "pulls" the trigger terminal to Positive. Which is a definite swing=
 from negative to positive rather than to just to a float level. Changing c=
omponent values on the relay PCB over the years could change the sensitivit=
y level of he trigger input making the relay output of the board a "sometim=
e" thing.
> Yes, that does make sense. The next time I am there on site I=20
> will install a 1K resistor just to be safe.=20
>=20
> Thanks!!=20
>=20
> Les

Thanks to Les for forcing us to stimulate our bain snells umm - - -  name s=
pells
I mean - - -  Harumph! - - - - BRAIN CELLS !
Speaking of which=20
The other day I discovered that I needed another audio glass break detector=
 in an area in a finished new construction pre-wire job. I really had to st=
rain my brain to remember how to wire the detectors to bring them back to t=
he panel on two separate zones on one four wire. I knew it could be done bu=
t I just went blank trying to remember how to wire it.=20
I blame it on the fact that I've been doing this for so long and I keep put=
ting new things in my brain and I keep losing brain cells and that causes s=
ome of the old stuff to fall out the other side. I don't think there's any =
more room left up there.!