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Simplex Unican EE1021B Back to Back Combination Lock

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  • From Only: £1,386.77 £942.99 + VAT
  • Brand: Kaba
  • This item qualifies for Free Delivery

Simplex EE1021 only allows access and exit via entry on the code. Both sides are coded. Offers Mechanical retraction of latch upon entry of correct sequence of code. Protective clutch mechanism and Fast code change whilst unit fitted to door. Additional Info The 1000 Series lock provides fully mechanical pushbutton access control with no electrical... Read more »

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Product Name Stock Price Tap in Req. Qty
Simplex Unican EE1021B With Cylinder
£1,386.77 + VAT
£942.99 + VAT
(£1,131.59 inc VAT)
Simplex Unican EE1021B No Cylinder
£1,386.77 + VAT
£942.99 + VAT
(£1,131.59 inc VAT)
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Simplex EE1021 only allows access and exit via entry on the code. Both sides are coded. Offers Mechanical retraction of latch upon entry of correct sequence of code. Protective clutch mechanism and Fast code change whilst unit fitted to door.

Additional Info

The 1000 Series lock provides fully mechanical
pushbutton access control with no electrical wiring,
electronics, or batteries. Exterior access is by
combination. Egress is by interior knob and
is free at all times.

Simplex 1000 Series locksets are the best choice for limiting
access to high-traffic, security-sensitive areas in
commercial, institutional, residential, and industrial
buildings. These locks are ideal for locations with
a high personnel turnover rate such as data
processing centers, employee entrances,
R&D labs, apartments, dormitories, and restricted
areas in hospitals and airports.

The pushbutton design eliminates problems
associated with the issue, control, and collection
of keys and magnetic cards. The combination
can be quickly and easily changed to ensure
continued maximum security once employees,
tenants, or guests leave, saving the cost
of new keys, key cylinders, magnetic cards,
and card-encoding devices


  • Door Preparation: Easily installs on wood or metal doors. ASA 161 door preparation with additional
    through bore holes required

  • Items Supplied Include: Lock assembly, installation manual, full-scale template, combination change plug
    and access key, and required installation hardware

  • Latch : Heavy duty 16mm mortice deadlatch. Suit doors 35 - 57mm thick.

Certification and Testing

  • Durability: Highly weather resistant

  • Fire Rating: 3-hour UL/ULC fire rating for "A" labeled doors

Our product specifications are given in good faith but can be subject to manufacturer change without notice. Should an attribute be of essense to your purchase, please feel free to contact us first for confirmation.


Main photo of Simplex Unican EE1021B Back to Back Combination Lock

FinishSatin Chrome
Case Depth Required110mm
Key OverrideOptional
Door thickness35mm - 57mm
Weather ResistantYes
Code Length1 to 5 digits
Number Of Codes1
Outside OperationBy key / knob on code entry
Inside OperationThumbturn on code entry
Access LatchHeavy duty deadlocking latch

Please note:  The data shown includes that of all products listed on the page, including accessories.
Please double-check with us if you're unsure of any individual product specifications.

Hi, guys. My name's Darrel. I'm head of the tech team here at Thanks for taking the time to tune in and have a look at this product review video. Also, we're going to go through how to change the code on the Simplex 1000 Series Combination Locks.

Now, the 1000 Series come in a load of different guises and a load of different scenarios, but the one that we have here is typically the standard one. There are different ones with lever handles and so forth, and you can also get them as well with key override cylinders actually in the knobs as well. So there are a whole host of different types of variety, but the changing of the code and the fitting and so forth is virtually the same.

One thing you need to be aware of, though, however, is that if you decide to go for the LR version of the 1000 Series, the lever handle ones, they are handed. So you need to make sure that the handing on the door is either left or right-handed to make sure you have the right one. And of course these can also come with a combination chamber on the outside, as well as a combination chamber on the inside. So, you need a combination to get out and you need a combination in which to get in as well.

So, a whole myriad of different applications are available for this particular type of combination lock. Now in my opinion, I like this particular combination lock when you're looking at heavy industrial use, a place where there's a lot of traffic, quite an industrial environment, where people are coming in and out every single day. And not only that, Simplex unit can offer spares and so forth, because these aren't cheap guys. These are quite a tidy penny, so there are a myriad of spares and all that are available as well should things start to fail after a couple of years of use or whatever. You've got that backup so you can just change parts as well, which is so important.

Now, when it comes to actually fitting one of these locks, you know, it's a beefy product. I'm going to lift it up and it's a weight. You know, it's solid construction and so forth. The idea is that here is the cam lock. This is the actual part, this is the latch that actually locks the door. Let me just go through this a little bit first and then I'll explain how it sits and so forth on the actual lock itself.

So here's the actual latch. It's substantial. The principle is exactly the same as on most combination locks in regard to using this deadlock snib that's here in the back. I don't know if you can actually see that. Okay, and what the idea is when the actual door is in the closed position, the key which, there is a choice of key, there's a really big heavy duty one there, and it comes with a slightly even more heavy duty one here as well. And the idea is that when you put this lock into it's keep, that latch there gets locked into place like that. All right? So, when that happens it actually deadlocks, if I can push that in. It now deadlocks that latch, which means that if you have here with a credit card trying to slip through the door, etc. to spring back the latch, well, that stops that. So if you're going to fit this from new, you want to make sure that that there is deadlocked. That will solve that particular problem. So that's important as well for you to know.

This is an industrial grade. You can feel the quality in it, the smoothness of the springs and so forth. It all oozes quality. Consequently, it commands a bigger price than most. This is obviously the outside on this particular door. I don't know if you can actually zoom in there for us, Lee. What we're going to try and do is now get this situated in here. It's like me putting it all together when I'm actually trying to fit this and so forth, a little bit of fiddling around, etc., but I should be able to get that in there, and there you go. So that is now in it's place. And that back set for you guys, if you need to be aware, I'll just give you a measurement from the backset to the actual leading edge there, and we're talking is 70 mil. Okay, so from the centre of the actual lock there to the faceplate of the latch is 70 millimetres, okay? That's the backset on the actual lock itself.

So, if I was to now put in the factory default code, keep an eye on that latch as well. It's two and four together and three. Okay, we'll now be able to operate that latch there like that. Okay, so that's it now, slip in, there's no code in it. If I put the code back in again, okay, there you go, that's that, done.

Now, on the back plate, once you get this fitted and so forth onto the door, you get this backing plate here, and this backing plate then will sit here, and you will use bolts then that screw all the way through and hold this all together and sandwich it into the door like that. You also get this little key lock. It sits at the top, guys. The idea of that is that it disguises that code.

This here is the code chamber combination for changing the code. I can go through that a little bit in detail on how to change the code. So that sits at the top there. And then this is the handle then at the bottom from the inside to allow you to open the door from the inside. So what you are going to do is you're going to try and take this handle off. And there are two particular parts to that. You've got the collar that sits there, and you'll see this collar here. If you try and take one of these off the door. If you think to yourself, "Oh, I'm trying to take one of these off of the door," to repair it or to replace it and so forth, this collar here is screwed on here and you need to undo this.

But, before you can get to that collar, you need to take this handle off. And the way to take this handle off, there is a pin — let me just find it for you there, ah, two secs. Yeah, there it is there. Now, I know if you can zoom in there because it's quite close there. All right? Now, when it comes supplied, it comes with this tool here, which is actually designed to actually get this knob off here on the back, and also this particular part here is designed to work this collar. And that sits inside there and it allows you to unscrew the collar off to get the lock off the door. That's what that tool is there. These are available on our site if you've lost yours or you've misplaced it, you can actually buy these as separate entities.

So I'm going to see if I can get this off now. It can be quite fiddly, so I'll see if I can get it off quickly. See if I can push that in there like that, I can pull that out, and there you go, that's off there. And now that would now allow you now to screw that collar on like that, and you would then use then the tool then to tighten it up so it's nice and tight. And then you can just clip the, slide the knob back on. Operate the little spring-loaded tension tool and she'd slip back on, no problem to us.

That's actually how you take the lock on and off the door. If you're fitting it from new, it's all in the instructions, so it's easy. But if you're doing it because you've got to take it off, etc., that's how you actually take it off the door.

Now, what you'll also find is if you want to change the code, this particular part here clamps the top piece. This is the backing plate here that you will see on the back of the door, and that will sit in there, like that. And you'll need to get these keys, in which to undo this and take this out. You need to take this out if you want to change the combination.

Now, if you've lost the key, these come with two keys as standard, but if you've lost your key, you can get these as separate entities on our site. There are different ones, but they're mostly generic. They go through times that they do change them every so often, but we wouldn't know which one you've got. This particular one, which is a modern one, is DF59. There are other different ones as well, so I'm not sure which one you might have.

But anyway, that's the back fixing. We've gone through the latch. We've gone through the knob and so forth. We've gone through all the fixings and so forth and paraphernalia that comes with this particular type of lock. And what I'm going to do now, I'm going to go through the sequence on how to change the code. So, I'm going to imagine now, this is on a door. And I've taken the cam out of the back. And what you'll see then is you'll see through the hole that this is screwed in to, you'll use a flathead screwdriver because you'll be needing to turn this here. This is the part that operates the chamber to allow you to change the combination.

So, what you would do in this moment in time, the code is two and four together and three is the standard factory default code. So I'm going to pump that in there now like that. So two together and three. Now you go then round to the back of the door, you've taken your barrel out and you need to then put your screwdriver in. And then you need to actually turn it clockwise. By turning it clockwise, you'll hear this click. Okay, and that now has put the chamber inside ready to accept a new combination. You come to the front of the door again and you turn the handle to clear the old code.

Now what you do is enter in your new code. One-two-three-four because that's going to be my new code. I now turn the handle again and I've now reset the chamber and now the code now is one-two-three-four. So if I try three and the old code, it turns but it slips. It doesn't allow this chamber here, this cam, the clutch assembly doesn't allow the latch to turn. So even though it turns, it doesn't actually operate the code. Now if I was to put in my new code: one-two-three-four, you'll see now that that assembly moves in, which is going to pull the latch back. And if I've reset it now, it's now finished.

Now, one of the advantages of this particular type of combination lock, guys, and it's quite important for you to be aware of, is that this remembers a sequence. It's not necessarily a row of numbers. It's a row of which buttons are pressed. So you can have multiple codes. You can have two buttons together, etc., which makes this a lot more secure type combination lock and is used mostly on banks and commercial and higher security applications. So, not only is it industrial, but it's a far more secure form of combination lock, and we would recommend it on any commercial environment.

One of the other things that you need to be aware of as well is, just to go through a few things, I've mentioned about the keep and here's an industrial grade keep as well for it, as well as the standard keep. It also comes as well with a box that sits behind the keep there. So therefore then, if you were trying to attack the latch from within there or trying and so forth, then you're going to go through a metal shutter as well, so that's quite important as well. That secures that.

So, other than that, I don't think there's much more that I need to say. I can't think of anything else that you might need to want to know about this particular type of lock. I've mentioned the security. I've mentioned the quality. I've mentioned how it works, etc. I've mentioned how to change the code. So, from me, I think that's all. But if there's something that I haven't mentioned, you think, "Oh, I'd like to know that", listen, pop a call on over to us or send us an email or use the live chat that we have online because that's easy to do. By all means, you can speak to me or any of the guys on the team here. We're all quite knowledgeable on this particular product.

So from me, Darrel, at the tech team here, I hope this video has given you a bit more information than what necessarily a photo might give or a little bit of a descriptive text. You can actually see it in the flesh. You can see how it works. You can see how to change the code, etc. So it gives you a bit more of an informed decision as to whether or not this is the particular lock for you.

So from me, Darrel, and all of us here, the tech team, I'm sorry for boring you for the last 10 minutes, but feel free to get some more information or we'd really love to see you as a customer if we can go that far. Anyway, from me, take care. Thank you. Bye-bye.

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