Hi guys, my name's Darrel. I'm head of the tech team
here at locksonline.co.uk. Today we've got in front
of us the GU A Opener. This is an electric lock that's
been designed by GU to work on uPVC and plastic type doors.
In years gone by in the access control industry and lock
industry it's always been quite difficult as to how do you get
access control or an electric access control system
to work on a uPVC door. People have tried putting magnets and sitting
them at the top, but the door's quite flexible and it doesn't
really work that well. Some people have tried to put
a strike release in and work on the latch, but then
you haven't got the multi point locking features that are required as part
of the insurance requirements when it comes to uPVC
So, going back around about eight, I think, maybe even
more years ago, GU A Opener, or GU as a company, brought
out what they called the A Opener. It's an automatic
opening lock. It's designed to work off 12 volts AC or DC. So, it's
quite universal when it comes to access control solutions.
Without further ado, let's have a look at this lock.
Because of its length the problem we will have is that
there's loads of different pieces. We start in the
centre, and then we'll work ourselves down to the bottom and then work our
way up to the top.
What we have here in the front, if I lift that up a little
bit then... If you could, Ev , can you zoom in onto the
actual centre lock case here. This looks like any other
ordinary lock. There's nothing special about this particular point multi
point lock. You've got the hole here which is designed to
accept a handle. You've got an access point there which
is designed to accept a handle, and, of course, another
access point down below. You've got the latch that works fine on the
follower like any other lock would.
If I was to use this screwdriver as the follower, there, I
am operating the latch no problem at all. If you put the
key in here you'll be able to throw the bolt. If I just
put that down a second there, there you go. That throws the bolt there fine
no problem at all.
All of that works like you would expect it to work. But,
where the magic of this particular lock comes in, and
if I now slide it up a little bit and get you to have a
look at this piece here, this particular black box that you can see here is
actually an electric gear box. Inside there there's a
strong motor that will actually drive this mechanism.
When you apply power to it it'll withdraw back the latch that's in
I don't know if you can come back there. Draw back the
latch in the centre. If I go up to the top here, sorry,
to the bottom, you've got then these latches here as
well. There's one there as well at the other side.
For the purposes of ease, because of its length, we'll
concentrate on what's happening here. When you close the
door... If I can push that up there a little bit,
let's have a look at this, because this is quite important here. When you
close the door... I don't know if you can zoom in as much
as you can onto that particular part there for us, Ev,
because there's something that happens on here quite a lot.
When the door closes this is in what they call the withdrawn state. When
the door closes this acts like the latch in the centre,
exactly the same like the latch up in the centre.
When the door closes this will get pushed in and then it
will spring back out into the locked position. But,
there's one little secret thing that happens here. I don't
know if you can actually see it, but there's a little spring that just sits
there. When it sits back home into its keep within the door
this gets pressed in. I'm trying to turn it about so
the camera can see it as well.
When I do that it throws this then up that little bit more
there. It's slightly twisted because it's leaning on its
side. Now that's going into the lock a considerable
amount, and it's dead locked. There's your multi-point locking solution.
That is how it works.
Again, there's one happening at the top as well. When it
closes these little spring catches here push out, allows
the spring to push out the rest of the bolt, and it
gets locked in there nice and tight. That's the unique advantage of this
particular type of locking system.
I'm not going to bother with messing around with all the
images, sorry, with all the measurements, because
we'll have those on the site so you can work out whether
or not this particular lock will fit you. Save and except if I bring it
back to the centre the most common and the most popular
version of this particular lock, and it does come in a
few different versions, is it's got a 35 millimeter back
If I show you what the back set is, it's the leading edge
- from here the face plate to the centre here where the
follower is where you put your handle in. That there is
35 millimeters. That's industry standard now on 95 percent of uPVC doors.
It's the 35 millimeter back set one will fit your particular
The distances between the centre and the centre of the
keyhole there, that's called a PZ measurement, and those
centres there are typically now 92. This one here is 92.
What I'm going to do now is I'm going to pause for a
second. I'm going to put some power to this lock. I'm
going to try and get the lock working here for you
guys so you can see it working. I'm going to cut off now for a couple of
minutes and I'll be back then and we can have a look to
see how it works when there's power applied to it. See
you in a minute. Cheers. Bye bye.
Hi guys, and welcome back. I've connected a 12 volt power
supply to this GU A Opener lock. It's in the form of
this battery here that you can see.
If you just zoom in a little bit there for me, Ev, I want
to show the guys the color codes here. What we have is we
have three colors here. We've got a brown wire. I'll
just point it towards you. We've got a brown wire, a gray wire, and a black
wire. The brown wire is red for positive. The gray
wire is black for negative. And, the black wire is
the trigger. It's the black wire that touches the positive
which then triggers the lock to work. So, that's the wiring configuration.
Of course, it'll work on AC or DC.
What we have here, if we can have a look at this
particular section here, that's now all been connected.
Let's pretend now that the actual lock is sitting in the
door, the door is closed, and everything's fine. These now are in the dead
lock position, because that's the way it would be
If I was to apply the trigger you'll now be able to see
this drive itself in. Of course, what's happening is
that's driving in. The centre latch is also driving in.
And, the top one of these latches is also driving in.
Because it's so long we'll just show you what's happening
with this bottom one. Let me trigger it and then you can
see what's going to happen. There you go. What has
happened there is the trigger has triggered. It's withdrawn the latch
back. It's bleeped then after it's finished it's process. Now
it's ready in the state for when the door closes again
for that little trigger to trigger and it to go back
into its dead lock position there.
All right. Ready for the next time it activates. What
we'll do now is we'll have a look at what's happening
in the centre. Let's have a look back here at the centre.
Of course, you've got the dead lock version here, and you've obviously got
the latch then as well here like normal.
When I now apply the power again - I'll apply the power
again - it withdraws the latch as well. Let me trigger that.
When it operates the complete locking solution there is
absolutely nothing left that you need to do other than push the door open,
and in you go.
When you close then this latch locks like normal. The one
at the bottom locks then with this dead locking
facility, and the one at the top then also dead locks
with its dead locking facility.
You must be mindful that the centre bolt here has got
nothing to do with the actual electric part. If you
wanted to secure the door at home, sorry, secure the
door at night when you leave or you don't want the access control, you can
throw this dead bolt with a cylinder on either side and it
will dead lock the door, and the access control functionality
will no longer work.
One of the other things you need to be aware of is that
this works with a pad type handle, a fixed handle on the
outside. And, it will work then with a lever handle on
the inside. If I was to pretend that I was on the inside and I wanted to
get out, all I need to do is operate the handle, push it
down, and it will withdraw all the latches along its
length. To get out in the event of fire, or just to egress, press the
handle down and out you go. That's the way you get out.
To come in you'd have a fixed pad. You haven't got a
handle. The only way that you can get in is either by
using your key in the cylinder and operating the key to
wind the lock back, or you turn around and you enter your access control
solution - you swipe your card or whatever you decide to do.
That's the functionality of the lock.
We do offer the options as well, I've got them here, of
the strike releases or the striking plates. I'll put this
battery to one side here. This is the striking plate for
the top. It has adjustability here as you can see. The same then for the
one at the bottom, it's exactly the same. It has
adjustability as well. Then, it also comes with a pair of
striking plates for the centre.
Now, because the striking plate you can put it on either a
left handed door or a right handed door, it comes as an
option with two striking plates depending on the
handing of the operation. That's an extra kit that you can have should you
so wish to.
Of course, you can use your ordinary handles. You can use
a little fixed pad. That would mean that the handles that
you've already got on the door we can fix the outside
lever so it doesn't work. That's an option on our website if you wanted
one of those. That's fine, no problem at all. You don't need to
buy a new set of handles. Of course, you can utilize
the existing cylinder as well.
There you go, guys, fantastic product. We as a company
have been installing these now for a good maybe eight,
maybe even more years. It's too long for me to remember. I'm
speaking from experience when I say that this is a good quality
And, it's not a cheap lock. But, it's one of those
situations where it might be better for you to invest
a few pounds and have something decent that works and
that will work first time than having to call back because something's
broken, or the door's flexing, or the magnet's not working
correctly. It's a well worthwhile investment.
Here we are, from LocksOnline. I really appreciate your
time that you've spent watching the video. I hope
what I've said will give you a considered opinion as to
whether or not this particular product is suitable for you.
Of course, if you need any more advice pop us an email,
www.locksonline, or give us a call on 08452300201. From
me now, thank you very much and take care. Bye bye.