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Smart Home & Security · Accessories & Add-ons

Smart Locks: What Else You'll Need

By the Nest & Yard editorial teamUpdated 2026-08-093 min read

Our pick: the August Wi-Fi (4th Generation) Smart Lock, Fits Existing Deadbolt in Minutes, Matte Black — the best Smart Locks we tested, from £334.17.

Installing a smart lock is a fantastic step towards modern home security, but it’s easy to overlook the essential extras you'll need for a seamless and fully functional setup. Alongside your chosen smart lock – such as options from brands like ULTRALOQ, August or eufy – consider investing in mounting accessories, secure cables, and potentially protective cases to safeguard against damage and ensure long-term reliability. This guide explores the common add-ons you’ll likely encounter when setting up your smart locking system, helping you prepare for all eventualities.

See the full range in Smart Locks.

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Pros

  • Six ways to unlock: fingerprint, keypad, app, key, auto-unlock and voice
  • Built-in Wi-Fi, no separate bridge required
  • Includes a door sensor for open/close alerts

Cons

  • Fingerprint sensor accuracy can dip in cold, wet weather
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August Wi-Fi (4th Generation) Smart Lock, Fits Existing Deadbolt in Minutes, Matte Black
Editor's Choice

#2 Pick

August Wi-Fi (4th Generation) Smart Lock, Fits Existing Deadbolt in Minutes, Matte Black
Rated 4.4 out of 5 stars (2,400)
  • Wi-Fi (Built-in)

£334.17

Pros

  • Built-in Wi-Fi means no separate bridge needed for remote access
  • Auto-unlock detects your phone as you arrive
  • Retrofits onto most existing deadbolts, keys still work

Cons

  • Bulkier interior unit than some rivals
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eufy Security Smart Lock Touch, Fingerprint and App Keyless Entry Door Lock, Auto-Lock
Best Value

#3 Pick

eufy Security Smart Lock Touch, Fingerprint and App Keyless Entry Door Lock, Auto-Lock
Rated 4.2 out of 5 stars (2,100)
  • Bluetooth (Wi-Fi bridge optional)

£234.20

Pros

  • Fingerprint unlock in under a second alongside app and keypad options
  • Auto-lock and tamper alarm for added peace of mind
  • No monthly subscription for core lock features

Cons

  • Bluetooth-only range means a Wi-Fi bridge is needed for remote unlock
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Yale Conexis L2 Smart Door Lock, No Subscription Required, Remote Access from Anywhere, Black
Best Budget

#4 Pick

Yale Conexis L2 Smart Door Lock, No Subscription Required, Remote Access from Anywhere, Black
Rated 4.2 out of 5 stars (1,900)
  • Bluetooth (Wi-Fi module optional)

£214.99

Pros

  • UK-specific nightlatch replacement, popular for British front doors
  • Works with Alexa, Google Assistant and Philips Hue
  • No ongoing subscription fees

Cons

  • Higher price than Bluetooth-only competitors
  • Professional installation recommended for some door types
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FAQ

What's usually included in the box with a smart lock?

Typically, you’ll find the smart lock itself, two keys for physical access (often one as a backup), a mounting plate, screws and fixings, and a small instruction manual. However, some brands omit accessories like extended batteries or installation tools – always check the product details before purchasing.

Do I need to buy a separate hub for all smart locks?

Not necessarily; many smart locks operate directly over Wi-Fi and don’t require a dedicated hub. However, some older or more complex models might necessitate the purchase of a compatible hub to connect to your home network.

What kind of batteries do smart locks use?

Smart locks employ rechargeable batteries, usually lithium-ion, and battery life varies significantly based on usage. Check the product specifications for the expected battery performance and consider purchasing replacement batteries as a consumable.

I’m worried about installation – is it straightforward?

Installation can range from simple to complex depending on your existing door structure; some locks require professional fitting. Carefully review the instructions provided by the manufacturer and assess your DIY skills before starting any work.

What kind of tools will I need for installation?

You’ll likely need a screwdriver (Phillips head is most common), a drill with appropriate bits for your wall type, and potentially a level to ensure the lock is mounted straight. It’s wise to have a small measuring tape handy too.

Are there any extra security measures I should consider?

While smart locks offer convenience, it's advisable to implement additional security layers like reinforced door frames and robust deadbolts for enhanced protection against forced entry. Consider a video doorbell to monitor access attempts.

Do I need to replace the existing cylinder?

Some smart locks are designed to retrofit directly onto your existing mortise cylinders, while others require replacement. Check the lock's compatibility with your current door cylinder type before purchasing.

What if my Wi-Fi signal is weak in the area where the smart lock is installed?

A poor Wi-Fi signal can cause connectivity issues; consider a Wi-Fi extender or mesh network to improve coverage near your smart lock’s location. Regular testing of the connection strength is recommended.

Are there any specific drill bits I should use when installing?

When drilling into brick, stone, or concrete you will need a masonry bit; for softwood or composite doors, a standard twist drill bit should suffice. Always wear appropriate safety eyewear and follow the manufacturer’s advice regarding drill speed.

How often do I need to change the batteries?

Battery life varies greatly based on usage frequency; generally, expect around 6-12 months before needing replacement. Monitoring battery levels through the smart lock’s app is recommended for proactive management.

In depth

Smart locks, while offering significant convenience and security benefits, rarely arrive fully equipped for immediate installation and ongoing maintenance. Beyond the lock itself, there’s a range of supplementary items frequently required to ensure a smooth setup and long-term operation. These often represent overlooked costs that can impact the overall project budget considerably.

Firstly, consider accessory hardware. Most smart locks require additional fixings – specifically, screws, wall plugs, and possibly even adhesive strips – to securely mount them onto various door types. The quality and quantity of these will vary significantly depending on the construction of your doorframe; a solid oak door will necessitate more robust fixing than a softwood composite one. Don’t underestimate the need for different screw sizes to accommodate varying materials.

Secondly, think about user management. Smart locks typically come with limited initial access codes or temporary credentials. You'll almost certainly need to purchase additional key fobs or create and manage multiple user profiles through the lock’s companion app – a cost often forgotten in early planning. Consider too that some systems require you to register users to the lock itself, potentially involving a small subscription fee for access.

Next up are maintenance essentials. Smart locks rely on batteries for operation, and these will inevitably need replacing over time. Factor in the ongoing cost of replacement batteries – lithium-ion batteries can vary significantly in price and lifespan depending on usage patterns. Additionally, you’ll want to budget for a small supply of cleaning materials specifically designed for electronic devices; keeping the lock body clean is crucial for optimal performance.

Then there's security related additions. While smart locks themselves offer advanced features, bolstering overall home security often necessitates complementary products. Consider purchasing a robust door handle and spindle set – the original hardware may not be compatible with the smart lock mechanism or offer sufficient protection against forced entry. Furthermore, a good quality door seal is critical to prevent drafts and potential intrusion points, and should be considered alongside the lock purchase.

Don’t overlook consumables either. Regularly checking and cleaning the electronic components of the lock, particularly if exposed to outdoor elements, will prolong its lifespan. A small microfiber cloth for wiping down the keypad or touchscreen display is a worthwhile investment. Finally, consider purchasing a spare key fob – losing one can cause significant disruption until it's replaced.

Finally, remember that installation itself may require additional tools you don’t already possess. Depending on your DIY skills and the complexity of the installation, you might need to factor in the cost of drilling equipment, level tools, or even professional installation services if you are uncomfortable undertaking the work yourself. A basic toolkit is an invaluable investment for any homeowner involved in home security projects.

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.

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