[Cialug] OT: Alarm systems

[Dave Weis]

Matthew Nuzum wrote:
> On Thu, Feb 5, 2009 at 10:25 AM, Dave Weis <djweis at internetsolver.com> wrote:
>> Hook your voltmeter between the red wire and the white wire and have someone
>> hit the test button. You should see 120 VAC on the meter. If so, hook up a
>> relay at the closest accessible point and you have contact closure when your
>> house is on fire. :-)
> 
> This would not be good if you lived in one of those houses that have a
> defective stove that causes food to sometimes, for no explicable
> reason, produce smoke.

You must still be a newlywed if you believe that the food spontaneously 
smokes!

It depends on what you are using the contact closure for. With careful 
programming you could use an alarm from 5-7 to denote that you should 
stop and grab dinner on the way home because there's a charcoal surprise 
on the oven otherwise.

-- 
Dave Weis
djweis at internetsolver.com
http://www.internetsolver.com/