Best LOUD Mini Alarm Piezo Siren 108db Its Unbelievable 12 Volt DC 6V 9V 12V VDC

Description

Super Loud 12V DC Mini Piezo Alarm
Warble Type, 108 db @ 15V DC
Dimensions: 1.8 inch x 1.56 inch
Beware of False Claims Made by Other Sellers
(Scroll down to see what to watch for in other eBay Ads)
Read below what makes our alarm different:
Super Loud (108 db @ 15V DC)
Distinctive Sound can't go unnoticed!
Proven Reliability (it won't let you down)
Best of the 19 Mini Alarms We Tested
Over 1000 Satisfied Buyers!
Small Size
Light Weight
Wide Voltage Range: 6V to 15V DC
Operates well from a 9V Battery
Typical Operating Current: .11 Amp @ 12V
Pre-Tested before shipping
Made in Taiwan
Scroll to Bottom to Read the "
Beware
" Text
If adding to an existing alarm system,
Read "Compatibility with Existing Alarms" Below.
A cheap piezo alarm is no bargain if
it's unreliable and fails when you need
it. We tested 19 different alarms we
found on eBay, and THIS ONE got the
highest marks overall. None of the
alarms were perfect. Even with this
model, there was some variation in
sound output between alarms. But the
variation was not nearly as severe as
it was with many other models.
Still, YOU'RE GETTING MY BEST
of these alarms as I've Pre-Tested
them all and sorted sorted them by
loudness. That means you're buying
the BEST Performers here. The others
that didn't quite measure up are sold
elsewhere at a reduced price.
Unfortunately, it's impossible for a
manufacturer to make alarms that
are all top performers and I explain
why below for those who want the
details. Since all alarms of this type
are made in China, it's not surprising
to find so many under performers.
But then we all know how little
Chinese manufacturers care about
making quality products.
Perhaps what makes my alarms
stand out from crowd is that they
were made in Taiwan, and not
mainland China. That difference
in quality seems to be evident
in some other products as well.
With Cheaper Alarms, we found you
sacrifice performance and reliability.
That's are a huge sacrifice that risks
personal safety and the protection of
your home and possessions.
If Buying This Alarm, please read the
rest of this ad. It contains important
hook-up information that will protect
the alarm from damage and help you
get maximum performance out of the
alarm.
Most other alarms I tested were very
inconsistent in sound output, with many
obviously not producing the advertised db
sound level. The defect rate of the other
units was often greater than 5%. I chose
this particular alarm to sell on eBay for
it's consistent quality, greatly lower
defect rate, better reliability, and for
it being one of the loudest of all the
alarms I tested.
This alarm takes advantage of natural
component resonances to achieve maximum
sound output which keeps the required
operating current as low as possible. This
design feature produces a longer battery
life when it's powered by battery.
OBSERVE PROPER POLARITY when
connecting this alarm. Red wire is (+)
and Black wire is (-). Connecting the
alarm with the polarity reversed WILL
damage the alarm.
For getting maximum sound out of this
alarm, you'll need a good 12V or 15V
Power Adapter. If you need such an
adapter, I can recommend a good power
adapter to you that I have personally
tested on this alarm. If this alarm is to
be used with your existing home alarm
system, it's important that you take time
to read the next paragraph.
This alarm can be used in your own home
projects when used with sensor switches or
controls that connect it to a 6 to 15 volt
external power supply
...or...
It can also be added to existing
security systems that provide 6 to 15
Volt connections for additional alarms.
In such cases, if your alarm system
provides a DC Voltage Output for an
additional alarm, just connect this alarm
observing the proper polarity. If the
existing alarm system just provides a
relay contact closure, you will need to
add a 12 volt power supply in series with
this alarm when making the connection
(observing proper polarities, of course).
Note:
This alarm is not compatible with alarm
systems that generate their own alarm
signal and provide an audio output
connection for additional speakers or
horns.
Warble Definition:
Similar to a Siren, the pitch of the
sound rises and falls linearly in a
repeating pattern.
This alarm produces a Very Loud,
Medium-Slow Warbling type sound,
and it only draws about 110ma at 12
Volts. The unit I tested even ran on as
little as 6 Volts at a somewhat reduced
volume level. I don't know if all units will
perform at voltages this low or not, but I
will be happy to test a unit for you at
what ever voltage you request. Just
send me an email before you buy
specifying the voltage you would like
me to test the device at.
Please Note:
The maximum advertised sound output
will only be produced when powered by
a 12V source. Lower operating voltages
will result in lower sound levels being
produced. That's the Laws of Physics
at work and it's true of all piezo alarms,
not just this one.
Also Note:
This is just a Sounder and requires a
connection to a Power supply or battery
and a triggering mechanism that has an
automatic shut-off.
Usage Considerations:
Since this is a Mini Alarm having Low
Power Requirements and a Small
Diaphragm, this alarm may not be
suitable for outdoor use where a large
coverage area is desired or the sound
needs to carry great distances.
Compatibility with Existing Alarms:
One of my customers tells me this alarm
is compatible with Honeywell and Titan XT
Security Alarms when connected to the HW1
terminals. However this is hearsay, so if
using with these alarms, you need to verify
that your HW1 terminals on these alarms
provides a 6 to 12 Volt DC Voltage.
BEWARE:
It's common for Chinese manufacturers
and other sellers to make False Claims
on the DB Sound level produced and
the Watt rating of the amplifier that is
producing the sound. But here is how
you can tell when false claims are being
made:
First, find the listed current rating of the
alarm in the ad and multiply that value
(in amps) times the alarm's maximum
voltage rating. If your calculation is much
less than the seller's stated Watt rating,
you cannot trust the specs the seller has
listed for his alarm. If the seller's ad does
not list the alarm's operating current, that
can also be a clue that the seller does not
want you to know the truth about his alarm.
This alarm's power consumption is about
1.32 Watt (.11 Amp x 12V = 1.32 Watt).
That is typical for piezo mini alarms
of this size, yet you will find some
eBay sellers advertising these kind of
mini alarms as 10 Watt, which is a
HUGE LIE! Know what you're buying
and if you can trust who you're buying from.
Sorry, No Local Pickups!