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WHY SPEND $160 FOR AN ACCESS
CONTROL UNINTERRUPTIBLE POWER SUPPLY
(UPS)  WHEN YOU CAN BUILD ONE FOR LESS THAN $60
AND ALSO COMES WITH REMOTE FUNCTION? HERE IS
HOW.
Picture 1: What you see above is what you
get. Manual is included which is not shown in the photo above.
It also has battery charging feature. Simply connect the two
cable shown above to a rechargeable battery Package comes with
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Access Control
Power Supply Circuit Board Rated 3Amp
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manual
PRODUCT DESCRIPTION
Offered here is a TWENTY
(20) new good quality 
Access Control Power Supply Circuit Board Rated 3Amp for those who likes to
build their own power supply. A typical access control power supply looks
like this:
or these:
and when closed look like this
 .
They all look complicated but is actually very simple and you can build it
yourself!
Here is how. A typical access
control power supply like the one above cost over $160.
Here is a blow up photo of how the
inside parts look like:
With reference to the photo above, it
consist only four parts.
1. The metal casing (you can get it
locally from your hardware store).
2. (Upper left hand corner of photo
above) An AC110V to AC12V step down transformer (if you are in the US) ; or
AC220V to AC12V step down transformer (if you are in Europe). This is
available also from your local electrical store or radio shack or even Wal-mart.
Please note, it is AC12V, not DC12V. Because this circuit board is rated
3Amp, the current rating for your step down transformer should exceed 3Amp. Preferably, it should be rated
3.0Amp or more. The item
that you are buying does not have a built in
AC110V-260V step down DC12V transformer, so you need to buy the transformer that
we do not sell. If you cannot find the transformer, then we suggest you
buy this alternative model (click this icon 
) which comes with a built in transformer.
3. (bottom of photo above, resembles
a black block) The rechargeable battery (this is optional, and is very useful in
the event of a blackout). This is available also from your local
electrical store or radio shack or even Wal-mart. This battery should be
rated at least 5.0AmpH to give you at least 10 hours of power supply in the
event of a blackout (this depends on how much power your electric strike
consumes, most of them is rated under 0.4AmpH). For those of you who are not worried about blackout,
you don't have to buy the battery which will further lower your cost.
The rechargeable battery should be
rated at least 5.0AmpH or preferably 7.0AmpH like the one shown in the photo
above. The battery should also be rated DC 12V.
4. (Upper right hand corner of photo
above) The access control circuit board
which you can buy from us now with this listing!
All the above can be bought and cost
less than $60 or less, depending on how and where you buy the parts! The
rechargeable battery is optional.
KEY
FEATURES:
The circuit board supports NO
(Normally Opened) or NC (Normally Closed) rated electric strike /
deadbolt.
It has safety fuse to prevent short
circuit.
It also has battery charging feature.
Simply connect the two cable shown above to a rechargeable battery rated at
least 5.0AmpH or preferably 7.0AmpH like the one shown in the photo above.
The battery should be rated DC 12V.
Because this board is rated 3Amp, the
minimum current rating for your step down transformer should exceed 3Amp.
We strongly suggest you get one that is rated 3.0Amp or more.
The circuit board comes with an
adjustable 0-15 seconds door open time delay. In other words, if you set
the delay at 10seconds, the door will stay unlocked for 10 seconds.
If you prefer a board that is
rated 5Amp and comes with remote controller and built in step down transformer, then click on this icon:
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