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CL4520.BS Smart Lock (Levers) - w. Anti-Panic Lock

CL4520.BS Smart Lock (Levers) - w. Anti-Panic Lock | Image 1
MPN: CL4520.BS
Finishes: BS Brushed Steel
built to order - allow 2/3 days for delivery
£257.00 ex VAT
£308.40 inc VAT
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CL4520.BS Smart Lock (Levers) - w. Anti-Panic Lock

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  • Product Description
  • Installation and Technical Information

CL4520.BS Smart Lock (Levers) - w. Anti-Panic Lock. BS Brushed Steel

Lock Function - The outside lever turns freely without operating the latch bolt. The lock case key (Euro profile cylinder) will control the status of the dead bolt and will also retract the latch bolt if turned far enough, i.e. unlocking the door without the need for a valid code. When a valid code is entered the keypad will flash blue and the lever will retract the latch bolt. After the standard timeout period the latch bolt re-locks the door when the door is closed. Throwing the dead bolt will always deny access, even with a valid code. The key in the lever will always override the locked status of the latch bolt - engaging the lever, which in turn retracts the latch bolt. The inside lever will always allow egress, irrespective of the status of the lock, retracting the latch bolt and the dead bolt simultaneously.

  • Anti-panic mortice lock 55mm backset
  • Suitable for high traffic uses
  • Multiple access methods
  • Manage via smartphone
  • Control entry with NetCodes
  • Keep track with Audit Trail
        Codelock | CL4510 Smart Lock

Body Material:  Zinc Alloy
Buttons:  12 back-lit keypad
Code free option:  Set up to 10 Code Free access periods
Door thickness:  35mm - 60mm (1 3/8" - 2 3/8")
Finish:  Brushed steel
Keying alike:  Locks can be keyed alike on request
Key override:  Yes
Non handed:  Lock will fit doors hung on the left or right
Power:  4 x AA cells
Spindle type:  8mm (5/16") spring loaded spindle
Suitable for:  Internal and external use
Type:  Anti-Panic Mortice Lock
NetCode:  6 digit
Audit Trail:  Yes
PC Programming:  Yes
Client User Codes:  100
Client Smart Cards:  150
Phone Clients:  100
Smartphone App:  Yes
Supporting Cards:  MIFARE™ Classic, MIFARE™ Desfire, MIFARE™ Ultralite

Smart locks get smarter. The CL4520 lock offers the CL5500 Codelock' smart lock features but in a smaller, sleeker model. 

The CL4520 lock combines smart technology with traditional keypad and card access options suitable for a wide range of applications, from building managers to home rental owners. Utilising Codelocks NetCode technology, the locks offer flexibility and convenience that enable businesses to recognise new levels of convenient access control without compromising on security.

Operate and manage locks directly via the keypad or via a compatible smartphone by downloading the K3 Connect App*. Program locks via your smartphone, generate and send codes for easy access, issue smart cards for alternative entry, track and control with audit trail.

Key Features

Code Card Phone
The CL4520 lock provides flexibility and convenience by providing a range of access methods allowing you to choose the most suitable entry method for your application. Allow clients access via a simple code, allocate and register a MIFARE® compatible card or send an invitation to their phone.

Generate and send time-sensitive codes to end users using the K3 App or NetCode portal. Set codes for a specific start date and time and that automatically expire after a set duration. Additional features include blocking NetCodes and setting Flexi NetCodes.

Controlled Code Free 
Set the lock into Code Free mode at fixed times of the day, reducing administration time and allowing users open access.

Audit Trail 
Keep track on when and where the lock was accessed. Download and view the full lock audit trail data.

More Control. More Convenience.


  • Up to 350 Users
  • 100 Phone Clients
  • 100 Client User Codes
  • 150 Client Smart Cards
  • 12 button back-lit keypad
  • Keyless entry - no lost keys
  • NetCode generation technology
  • Set up to 10 Code Free access periods
  • Suspend and Restore any or all Clients
  • Mortice Latch and Mortice Lock available
  • Keypad indicates locked / unlocked status
  • Tamper time out and low battery warning
  • Manage and operate locks via smartphone
  • Personal wireless connectivity for management
  • Auxiliary Connections enabling four different modes of operation

Manage with the K3 Connect App 


The locks can be managed with the K3 Connect App by any Bluetooth compatible smartphone. The App is available on Apple App Store for Apple devices or Google Play™ for Android™ devices by searching for K3 Connect.

Apple, the Apple logo, and iPhone are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Android, Google Play and the Google Play logo are trademarks of Google Inc.

Additional Functions

Auxiliary Connections
The CL4520 locks include two auxiliary connectors (REM Ports). Traditional behaviour of these ports allows reception desk remote opening (REM 1) and alarm panel trigger to open (REM 2). The REM behaviour also enables the lock administrator to select between four different modes of operation; Remote Release, Sensor Mode, Sensor + Alert and Unlock + Lock Down.

Remote Release
REM1 is intended for push-button release where the lock will open for the normal set time. REM2 is intended for use where the lock needs to be released for a longer period. When a switch or relay connected to REM2 is closed, the lock will open for a period of 30 minutes after which the lock will revert to normal operation.

Sensor Mode
Allows two dry contact switches or sensors (door status and latch monitoring) to be connected. Trigger entry will be added to the audit trail.

Sensor + Alert
A hybrid mode combining the support for a single dry contact switch or sensor (as per sensor mode) and an output. The output can be connected to any compatible device, such as CCTV, with an input that supports the detection of a falling (changing) voltage.

Unlock + Lock Down
Support the connection of two dry contact switches. Connected to REM1, the switch will unlock the lock for the period set by the standard re-lock delay. Connected to REM2, the switch would trigger the lock-down mode of the lock where on the Master and Sub-Master Code can be used for entry.

Relcross Limited

The CL4520.BS Smart Lock (Levers) - w. Anti-Panic Lock is a Relcross product - see for additional information 

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