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.
detector?
I want to run a horn outside.
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.
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.
simple to do right,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.
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.
"Rich" <[email protected]> wrote:
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.
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.
Boy are you ever wrong. The "tandem connection" is used by the listed relay
as well. http://www.icca.invensys.com/firex/accessories.htm