Homeowners across the UK are switching to keypad locks that still keep a physical key backup. This combination of convenience and security appeals to many: you can enter with a code but still have a familiar key as a fallback. Yet the decision is not always straightforward, because there are clear trade-offs. This page helps you cut through the noise by explaining exactly how keypad locks with key override work, what to look for, and whether this type of lock is suitable for your situation.
What a Keypad Lock With Key Override Actually Does
At its core, a keypad lock with key override gives you two ways to gain entry: either by entering a code on the keypad or by turning a physical key in the override cylinder. The keyless side of the mechanism is mechanical, so there is no need for wiring or batteries, which appeals to UK users who prefer low-maintenance hardware. Lockey Digital’s approach keeps the code-based operation straightforward, with no apps or complex programming involved.
From a practical standpoint, this suits situations where you want to reduce key duplication but still preserve a familiar backup method. In a family home, a child might forget the code, or a guest might arrive when no one is home to let them in. The key override ensures access without forcing the door. For landlords, the key override is useful when you need to regain access quickly at the end of a tenancy without waiting for a code to be handed over.
On the Lockey 2435K, the key bypass is integrated into the lock body alongside the keypad. When using the LD2000 Easy Key Override add-on with other models, the key cylinder fits directly behind the keypad housing. In all cases, the override is designed to be discreet, discouraging casual use of the key and maintaining the keyless habit for everyday entry.
How Key Override Systems Are Configured
There are generally three keying configurations available for keypad locks with key override:
- Keyed differently (KD) means each lock has a unique key. This is the standard configuration for most residential installations where only one door uses this type of lock.
- Keyed alike (KA) means multiple locks share the same key. This is useful for landlords or property managers overseeing several properties, as a single key opens all override cylinders across the portfolio.
- Keyed to master (KM) means individual keys work on their own lock, but a single master key opens all of them. This suits buildings with multiple locked doors where occupants each need their own key, but a manager needs universal access.
- Understanding these options before purchasing helps you avoid buying a lock that does not match your access management needs.
Types of Keypad Locks That Support Key Override
Keypad locks come in several configurations, and key override can typically be added to most of them. The main types to consider are:
Mortice Latch Locks
Mortice latch locks sit inside the door edge and use a spring-loaded latch bolt. These are the most common choices for internal and external doors. Many models include a holdback function that allows the door to be unlocked during busy periods, reducing wear on the keypad. Some mortice latch locks are fire-rated when fitted with the appropriate intumescent kit.
Lever Handle Latch Locks
Lever handle latch locks operate similarly to mortice latch locks but use lever handles rather than knobs. The lever design is easier for older users and young children to operate, making these locks a popular choice for family homes, accessible entry points, and gates.
Mortice Deadbolt Locks
Mortice deadbolt locks provide maximum physical security. The bolt extends fully into the door frame and is typically resistant to cutting, bumping, and forced entry. Deadbolts are the preferred choice for front doors or any opening where visible strength matters. Not all deadbolt models carry fire ratings, so check the specification if fire compliance is required.
Latch Locks Without Holdback
Latch locks without holdback are designed for fire doors and restricted areas where the door must always return to a locked state. These ensure that nobody can prop the door open, which is a requirement in many commercial and multi-occupancy buildings.
When choosing a lock type, consider the door material, location, and how the door will be used day to day. The lock type determines the level of security, convenience, and regulatory compliance you can achieve.
Pros of Keypad Locks With Key Override
There are several clear advantages to choosing a keypad lock with key override rather than a purely key-based or purely electronic system.
- Reduced key duplication and loss. When tenants or staff use codes instead of keys, you cut the risk of lost or copied keys. In a rental property, this translates directly into fewer emergency locksmith calls and fewer lock replacements. The 2435K or any lock paired with the LD2000 add-on allows you to keep the override key with the landlord or managing agent while everyone else uses codes.
- No wiring or power dependency. All Lockey keypad locks with key override are mechanical, so they work during power cuts and do not need wiring into your electrical system. This simplicity appeals to older housing stock, where retrofitting electronics is tricky.
- Convenient code management. You can change codes when tenants move without changing the physical lock. Remove the lock from the door, rearrange the internal colour-coded tumblers, and refit it. The process takes a few minutes, costs nothing, and can be done as often as needed.
- Emergency key backup. The key override provides a predictable way to open the door when the code is forgotten or a user is locked out. This strikes a balance between modern keyless access and traditional security thinking that many UK homeowners find reassuring.
- Fire compliance on selected models. The 2435K and 2835 have been fire tested to BS EN 1634-1:2014 when fitted with the Lockey intumescent kit, making them suitable for 30- and 60-minute fire-rated timber door sets. This simplifies compliance for landlords and property managers.
Cons of Keypad Locks With Key Override
On the other hand, there are notable drawbacks to consider.
- User error and code sharing. People forget codes or share them with unauthorised individuals. If a tenant writes the code on a sticky note, the keyless benefit is somewhat lost. Locks with a single shared code, which is how all Lockey mechanical locks work, are especially vulnerable if that code is compromised, though the fix is simply to change it.
- Visible wear on the keypad. Over time, commonly pressed buttons can show wear, potentially helping someone guess which digits are in the code. Lockey’s non-sequential code system mitigates this to some extent (an observer would still need to guess the combination from the worn buttons, not the order), but in high-risk areas, you may want to change codes more frequently.
- Limited lifetime warranty on key override models. Lockey’s full Lifetime Mechanical Warranty applies only to keyless models without a key cylinder. The 2435K carries a Limited Lifetime Warranty, and adding the LD2000 key override to any keyless lock changes its warranty status similarly. This is because the key cylinder introduces an additional component subject to different wear characteristics.
- Installation and retrofitting considerations. Mortice locks like the 2435K and 2210 need a clean mortice in the door edge for the latch or deadbolt. If the door is not prepared properly, you may need additional work. A locksmith or experienced tradesperson is recommended for a clean fit on non-standard doors. The LD2000 add-on itself requires no additional drilling, but the base lock must be correctly installed first.
- The key override reintroduces key management. The whole point of a keypad lock is to avoid keys, but a key override means you still have at least one physical key to track. If the override key is lost, you face the same rekeying or cylinder replacement scenario you were trying to avoid. Keep the key secure with a designated person, such as a landlord or managing agent, or in a key safe, rather than distributing copies.
- These points are trade-offs, not dealbreakers. The right Lockey product, properly fitted, keeps the cons manageable while maximising the benefits.
How To Choose The Right Model For Your Door
What sort of door do you have?
For standard timber or composite front doors, the 2435K or a 2835/2210 with LD2000 add-on are usually the best fit. For gates, the 2835 with Gate Lock Adapter and LD2000 provides both keypad and key access. For deadbolt security on a front door, the 2210 with LD2000 gives you a strong bolt with code-plus-key entry.
How often will the code change?
In rental properties, codes need to be changed at the start of every tenancy. All Lockey mechanical locks support unlimited code changes at no cost. If you need multiple simultaneous user codes (for example, each tenant having their own code), Lockey mechanical locks cannot do this; they support one shared code. For individual codes, you would need an electronic lock system.
Do you actually need the key override?
If you are confident that code-only access meets your needs, the keyless versions (2435, 2210, 2835 without KOS) offer the full Lifetime Mechanical Warranty rather than the limited warranty on key override models. Add the key override only if you have a genuine use case for it, such as landlord access or emergency backup.
What are your fire compliance requirements? The 2435K, 2435, 2430, and 2835 are all fire tested to BS EN 1634-1:2014 with the intumescent kit. The 2210 is not fire-rated. If your door requires fire-compliant hardware, this narrows the choice to the latch models.
Installation Tips For Lockey Keypad Locks
- Measure the door and frame accurately. Check door thickness, backset (from the door edge to the centre of the lock), and handing before ordering. The 2435K suits doors of 35 to 55mm thick with a 60mm backset (adjustable to 70mm). Getting these measurements wrong is the most common cause of fitting problems.
- Prepare the mortice or surface cutouts cleanly. Mortice models like the 2435K and 2210 require a clean mortice in the door edge. Use a proper mortice chisel and marking gauge, or employ a locksmith who regularly fits UK door hardware.
- Align the keypad and strike plate precisely. If the strike plate is off-centre, the latch or bolt will bind, making the lock feel stiff and accelerating wear on internal components. Even a millimetre of misalignment creates cumulative stress over thousands of operations.
- Use stainless steel fixings outdoors. Standard screws will rust in exposed positions, weakening the mounting.
- Test both the code and the key before relying on the lock. Operate the lock at least 20 to 30 times using the code, then test the key override separately. Confirm both work smoothly with the door both open and closed.
- For fire-rated doors, the intumescent kit must be fitted alongside the 2435K or 2835 to achieve BS EN 1634-1:2014. Without it, the installation does not meet the standard.
- Every Lockey lock ships with a drilling template, all required hardware, and step-by-step instructions. For model-specific fitting advice, contact Lockey Digital UK at enquiries@lockeydigital.co.uk or call 01763 245245.
Maintenance and Longevity
Clean the keypad periodically with a damp cloth to prevent dirt buildup in the button mechanisms. Do not use solvents or abrasive cleaners.
Apply silicone-based lubricant to external moving parts once a year if needed. Never use oil-based lubricants, which attract dirt and can damage the internal Teflon coating. The manufacturer warns that non-synthetic lubricants may void the warranty.
The key override cylinder should be checked occasionally to ensure it turns smoothly. If the cylinder feels stiff, a small amount of graphite powder or silicone spray into the keyway will help. Do not use oil.
Check mounting screws annually, especially on exterior doors or gates, where weather and vibration can loosen fixings.
The adjustable latch, deadbolt, and spindle are consumable parts that may need replacement after years of heavy use. Replacements and key blanks for the 2435K (KD, KA, and KM) are available directly from Lockey Digital UK.
Frequently Asked Questions
Do I need a key override on my keypad lock?
Not necessarily. A key override is useful if you need emergency backup access, landlord or managing agent access, or a fallback for very young children or elderly users who may struggle with the keypad. If none of these applies, a keyless model without a key cylinder offers a simpler system, eliminates key management, and qualifies for the full Lifetime Mechanical Warranty rather than the limited warranty on key override models.
Can I add a key override to a Lockey lock later?
The Lockey LD2000 Easy Key Override accessory can be added to existing or new Lockey 2210, 2430, 2435, and 2835 locks. It fits behind the keypad with no additional drilling, so you can start with a keyless lock and add key access later. The 2435K has the key override built in. You cannot add a factory-integrated key cylinder to a lock that was not manufactured with one, but the LD2000 add-on achieves the same practical result.
Are keypad locks with key override as secure as traditional deadbolts?
The Lockey 2210 (with or without the LD2000 key override add-on) is itself a deadbolt, featuring a free-spinning stainless steel core shaft that resists cutting. It provides equivalent or superior physical security to a standard keyed deadbolt, with the added advantage that the keypad cannot be bumped or picked because there is no pin-tumbler cylinder on the code side. When a key override is added, the key cylinder becomes the one potential vulnerability, as it could theoretically be picked or bumped like any keyed cylinder. Keeping the override key as a backup rather than the primary method of entry minimises this risk.
What happens if I lose the key override key?
If you lose the override key for a Lockey 2435K, you can have the cylinder rekeyed by a locksmith or replaced entirely. Key blanks for the 2435K (KD, KA, and KM configurations) are available from Lockey Digital UK for future key cutting. For locks using the LD2000 Easy Key Override add-on, replacement keys and blanks are also available from Lockey Digital UK. In all cases, the lock continues to function normally via the keypad code; losing the key does not lock you out.
Ready to Choose?
Browse keypad locks with key override options from Lockey Digital UK, the exclusive UK distributor since 1982. For help choosing between models or advice on installation, email enquiries@lockeydigital.co.uk or call 01763 245245. Lockey Digital UK Ltd has been the exclusive UK distributor of Lockey mechanical locks since 1982.
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