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House 110V smoke

R

Rich

Jan 1, 1970
0
Can I add a relay to the yellow wire of my house hold 110 V old smoke
detector?
I want to run a horn outside.
 
F

FIRETEK

Jan 1, 1970
0
That depends on your smoke. The relay must be compatible with it. Some
manufacturers provide the relay as an option, others actually incorporate it
in a relay based detector that will interconnect with your existing smokes.
What's the make and model number of the smokes in your home?
 
J

jewellfish

Jan 1, 1970
0
That yellow wire is almsot certainly the "interconnect" wire. I
suppose you could rig something up to ring a bell outside.

Remember you're dealing with 120vac. If you need to ask how to rig
something up, you probably don't have the expereince to safely work on
120vac.

Call an electrican.


Regards,

bill
 
A

alarman

Jan 1, 1970
0
Rich said:
I have to place a meter across the yellow and the natural,
do you thing the output is 120 AC. even with battery back up I don't think
so.

I know an electrician.

Call him.
js
 
J

J Barnes

Jan 1, 1970
0
No its not 110, if you connect anything to this wire it must be extremely
low current. If you do this wrong it will disable the sound in all your
smoke detectors "except the one where the fire is".

James
 
F

FIRETEK

Jan 1, 1970
0
You must use the manufacturer's approved relay for any interconnection to
your household smoke alarms. This relay is most likely also UL Listed for
the purpose of providing an output from those specific interconnected smoke
alarms. Otherwise you'll have to try and source a relay based detector
that's compatible with your existing smoke alarms. DO NOT "Mickey Mouse" or
"jury rig" something you think "might work".
 
B

Bob La Londe

Jan 1, 1970
0
jewellfish said:
That yellow wire is almsot certainly the "interconnect" wire. I
suppose you could rig something up to ring a bell outside.

Remember you're dealing with 120vac. If you need to ask how to rig
something up, you probably don't have the expereince to safely work on
120vac.

Call an electrican.

LOL, lots of electricians would have issues with this. No, not be
offended, but just not understand how to do it.

Call a service electrician.
 
B

bb

Jan 1, 1970
0
Rich said:
Can I add a relay to the yellow wire of my house hold 110 V old smoke
detector?
I want to run a horn outside.
simple to do right,

just add another 110v smoke detector where it can be heard outside.

bb
 
C

Crash Gordon

Jan 1, 1970
0
Yah...just hang it out the nearest window on a piece of Romex.


| Rich wrote:
| > Can I add a relay to the yellow wire of my house hold 110 V old smoke
| > detector?
| > I want to run a horn outside.
| >
| >
| >
| simple to do right,
|
| just add another 110v smoke detector where it can be heard outside.
|
| bb
 
Rich said:
I have to place a meter across the yellow and the natural,
do you thing the output is 120 AC. even with battery back up I don't think
so.

The yellow or "tandem" wire is used to place other detectors in the
house (same model number) in alarm and can not be used to drive a
relay. Most tandem outputs are from 3-6 vdc and not 120vac...
remember, this must also function while running off the 9 volt
battery.

If the detectors have auxilliary alarm contacts or a auxilliary relay
option, use them instead. However, ALL detector contacts or relays in
the house must be used in parellel because they do not transfer when
receiving an alarm via the tandem connection.

Rick P.
 
F

FIRETEK

Jan 1, 1970
0
The yellow or "tandem" wire is used to place other detectors in the
house (same model number) in alarm and can not be used to drive a
relay. Most tandem outputs are from 3-6 vdc and not 120vac...
remember, this must also function while running off the 9 volt
battery.

That's not universally true. I know of at least one smoke alarm family
where the "tandem wire" _isn't_ "low voltage". I imagine that because the
don't have battery backup, they can't be used in many jurisdictions in the
US, though.
If the detectors have auxilliary alarm contacts or a auxilliary relay
option, use them instead. However, ALL detector contacts or relays in
the house must be used in parellel because they do not transfer when
receiving an alarm via the tandem connection.

Boy are you ever wrong. The "tandem connection" is used by the listed relay
as well. http://www.icca.invensys.com/firex/accessories.htm
 
F

FIRETEK

Jan 1, 1970
0
Don't forget to wrap it in plastic first. Seal the end with a "dab of RTV".
;)
 
That's not universally true. I know of at least one smoke alarm family
where the "tandem wire" _isn't_ "low voltage". I imagine that because the
don't have battery backup, they can't be used in many jurisdictions in the
US, though.

Well, since the gentleman asking the original question says his
detector has battery backup, the tandum output must be low voltage to
meet the interconnectivity requirement.
Boy are you ever wrong. The "tandem connection" is used by the listed relay
as well. http://www.icca.invensys.com/firex/accessories.htm

Okay, you've peaked my interest - I've never seen this device before.

BUT, this Firex detector and the #499 accessory relay you refer to
are both 120vac devices and have no battery backup capability, which
as you stated, can't be used in many jurisdictions today.

I'm seeing some info on the web about a Firex #498 relay which appears
to have the capability of being wired off a DC operated detector
tandem connection. It's not on their website however and may have
been discontinued.

Thanks for the update...

Rick P.
 
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