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[leo]

I purchased RS 49-1000 and I assume X10
manufacture it for Radio Shack. The siren
is not loud enough and I was wondering if I
can open the box, disconnect the wire to the
buzzer and run external wire to outdoor
siren. Has anyone tried this?

Thanks

[Brian H]

You can disble the internal one in setup as
you know. Guess you could do that, but don't
know how much power the drivers in the unit
supplies. You probrbly also have read the
threads on sirens and the 49-1000 problems
with the SH10A; PH508 and the Sonic S-300

[leo]

no, i do not know the problems with RS and
power horn, can u please let me know.
I was just going to buy:
http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=49-1120

[Brian H]

They basically don't work as they expect a
All Lights ON and a All Units Off command
from the console or a House-Unit Code On -
Off on the address they are set to. Example
if Powerhorn set to B1. Either a B All
Lights ON B All Units Off or a B1 BOn B1
BFww will trigger them. The 49-1000 sends
two Security Light Codes the one set like B1
and the next highest B2. The timing is not
correct to trigger either the SH10A or the
PH508. Also the Sonic SS-300 doesn't like
the 49-1000 either. There are about 4 other
threads in this forums area that explain it
better from some tests I have run with both
a DS7000 and 49-1000 using both a PH508 and
a SH10A.

[Brian H]

Most of the threads where started by Brandon.
Some may have scrolled to page two here in
the security area. Most refference the 49-
1000 or a siren issue with the 49-1000. Yes
X10 did OEM the 49-1000 as all the FCC
numbers are granted to X10 Wireless Inc. I
have found that most of the security modules
except the powerhorns seem to interchancge
between them.

[Brian H]

Long weekend and hope to have time to tinker
with both a PH508 and a SH10A

[Brian H]

My poor results are in Brandon's message
thread about the 49-1000 and sirens.

[leo]

Brian,

Thanks for trying anyways... I am going to
look in to other solutions.

later,
leo

[Brian H]

Good hope you can find one.

[lupe]

Of course it can be disconnected, and it
will also void your warranty. But who cares
its probably already yours. 1. Disconnect
internal siren by cutting wires to it or
desoldering pins. 2. Find out what voltage
is used by siren. It more than likely is a
DC voltage using minimal current draw.
However current draw is not a concern.
Voltage may be stamped on existing siren or
just measure it with a meter. 3. Connect
relay coil of proper voltage to connections
of removed siren. Radio Shack or
electronics supply house should have relay.
(May need to observe polarity here). 4. Get
proper transformer for new siren and wire
in series to Common and Normally Open relay
contacts. Start with Negative of
transformer and connect to negative on
siren. Connect positive of transformer to
Common of relay. Connect Normally Open of
relay to positive of siren. Oh, don't
forget to plug in transformer. And that's
it.

[Brian H]

For #2. The internal sounder is a Pizo type
and uses a high voltage with almost no
current to drive it. Most relays will not
work.

[lupe]

You say most,Is there one that will work
for Leo who posted original message. I know
there all all kinds of relays out there
including reed relays. What is the voltage
to piezo and how much current does it draw.
Have you personally done this?

[leo]

hi ,

yes brian did series of tests but we were
not successful. I think the voltage is around
23v and not sure exactly about the current.
I think part of the problem was to come
up with the relay which fired off the circuit.

Personally I gave up, i end up
getting 2 buzzers, draw 2 wires from the unit
to the buzzers and place the buzzer outside
of my house. It does not sound that great
but it is loud enough to draw attention.
Also the unit dials numbers with in 1 sec
which is kind of cool. Since i had the unit,
we had only one false alaram while my
neighbour was kind enough to come outside of
her house (plus the unit called my office).
So i guess, i gave up on it:-) still a
good solution for alarm for under $100.
better than noting.

leo

[Brian H]

Not on the DS7000. On the PH508 and SH10.
Both have the same sounders. The voltage is
a distorted [on a scope] 50 volt ball park
AC wave form that even my meter loaded down.
Meter roughly 25 to 30 volts AC. Anyway I
used 4 Fast Recovery Diodes in a Bridge. A
22 Uf cap to filter it and a 24 volt extra
sensative relay. Can look up the realy if
you want me to. In my tests it loaded down
the internal sounders, but in your case you
want to disconnect the internals.

[Robert D]

I Built a good external alarn for the 49-
1000 and it does not load the enternal
sounder down. Feed the output into a full
bridge. Put a .1@50 v cap accross + &-. Put
a 20k trim pot accross that and trigger the
alarm and adjust the wiper output to 15v
with ref to -. Now connect the wiper to a
1k resistor and connect it to the gate of
IR510(RadioShack. Tie source to minus and
drain to a 12v relay.Put a .1 cap accross
gate to - just to make sure any noise
filtered. Supply 12v to oposite side of
relay. The 12v can also go thru relay
contacts to power a Radio Shack two tone
Siren Siren. This circuit is working great
for me and it is verry loud.