| Ultion Nuki 2025 | Ultion describes the 2025 model as designed for UK doors and pairs the Nuki smart turner with an Ultion 3 Star PLUS replacement cylinder; the exact door configuration still has to be selected correctly.[1][2] | This is a replacement-cylinder installation rather than a motor-only add-on to an arbitrary existing cylinder. Ultion states that a normal physical key can still operate the lock from outside.[1] | Ultion publishes app, physical-key and fob access, with keypad and fingerprint keypad options available for keyless entry and shared access.[2] | Built-in Wi-Fi provides Nuki remote access without a separate bridge, and the 2025 model supports Matter over Thread.[1][2] | The lock has USB-C rechargeable power; Ultion claims up to nine months of battery life. Ultion also states that the supplied cylinder is its 3 Star PLUS design; these are manufacturer-published specifications and claims.[2][1] | No separate Wi-Fi bridge is required. Keypads and fobs are optional; the correct cylinder and exterior-hardware choices are part of configuring the lock.[1][2] |
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| Yale Conexis L2 Black | Yale says Conexis L2 works with most compatible multipoint locks and directs buyers to its door compatibility checker; the range is intended around inward-opening lift-to-lock doors rather than every lock type.[5][3] | The Conexis L2 installation replaces the existing lock interface and handle hardware. Yale's optional installation service covers the lock installation but not modifications required to make an incompatible door fit.[3] | Yale lists smartphone, key tag and phone-tag or card access, with scheduled or permanent guest access through the Yale Home app.[3] | The L2 kit includes Yale connectivity hardware for remote monitoring and access through the Yale Home app. Yale's product page also notes that the door cannot be locked from the Yale Home app, a limitation buyers should understand before choosing it.[4][3] | The lock is wire-free and includes a tamper alarm. Yale states that Conexis L2 carries a BSI IoT Kitemark and Secured by Design accreditation; these are manufacturer-published accreditation claims.[3] | Yale lists the Connect Wi-Fi Bridge, Yale Access Module and two key tags in the L2 kit, and states there are no monthly monitoring fees. Fingerprint or PIN keypads and professional installation are optional extras.[4][3] |
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| Nuki Smart Lock Pro | Nuki says Smart Lock Pro fits most common European cylinder types. Its compatibility guide requires checks for cylinder overhang, key thickness up to 4 mm, key projection up to 37 mm and clearance around the keyhole.[8] | The lock mounts on the inside over the current key without drilling. Nuki recommends an emergency-function cylinder when outside key access must work while a key remains inserted inside.[7][8] | App control and digital access are built in; physical-key fallback remains possible with a suitable emergency-function cylinder. Code and fingerprint entry require a compatible optional Nuki keypad.[7][8] | Nuki lists built-in Wi-Fi, Matter over Thread and included Remote Access, so a separate Nuki Bridge is not required for the Pro.[7] | The fifth-generation Pro has an integrated rechargeable battery. Nuki's compatibility guidance preserves outside-key operation only when the cylinder itself supports the required emergency function.[7][8] | No Nuki Bridge is required. A keypad or fingerprint keypad and any replacement cylinder needed to satisfy compatibility are separate purchases.[7][8] |
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| Yale Linus Smart Lock L2 Lite | Yale specifies lift-to-lock doors only, with at least 3 mm of cylinder protrusion on the inside. It explicitly says the L2 Lite is not compatible with split spindles or auto-engage multipoint locks.[6] | The lock is an internal retrofit. Yale says a replacement cylinder may be needed where the existing cylinder or thumbturn arrangement is unsuitable, including when outside-key emergency access cannot be maintained.[6] | Yale Home app access and digital sharing are supported. Physical-key access can remain with a suitable cylinder, while keypad-based PIN or fingerprint entry requires a compatible Yale keypad accessory.[6] | The L2 Lite supports Bluetooth and Matter over Thread but does not have built-in Wi-Fi. Yale says its ConnectX Wi-Fi Bridge is sold separately for Yale remote access.[6] | Yale supplies replaceable batteries and publishes a battery-life claim of up to six months under normal use; this is a manufacturer estimate, not an independent measurement.[6] | A ConnectX Wi-Fi Bridge is extra for Yale away-from-home connectivity. A replacement cylinder and Yale keypad are also additional purchases when the door setup or preferred access method requires them.[6] |
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| SwitchBot Lock Ultra | SwitchBot describes Lock Ultra as designed for European locks and provides mounting or adapter options for different lock forms. Exact compatibility should be checked against the installed cylinder or nightlatch before purchase.[9] | Lock Ultra is a retrofit motor intended to mount on the inside over compatible existing lock hardware rather than replace the whole door lock. The correct mounting method or adapter depends on the existing lock.[9] | The standalone lock supports local Bluetooth app control and manual thumbturn operation. Optional Keypad Touch adds fingerprint, passcode and NFC; Keypad Vision adds additional biometric access.[9] | A SwitchBot Hub is not required for Bluetooth unlocking and local control. SwitchBot says a hub is required for app remote control, real-time status, voice assistants, Matter, IFTTT and cross-device automations.[9] | Published specifications list a 4,200 mAh rechargeable main pack using three 18350 cells, plus a CR123A backup battery. SwitchBot claims up to nine months for the main pack and up to 1,000 emergency unlocks from the backup.[9] | A SwitchBot Hub is an extra for remote and Matter functions, and a keypad is extra for PIN, NFC or fingerprint entry unless a bundle is purchased.[9] |
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| Yale Keyless Connected Smart Lock Polished Brass | Yale says Keyless Connected is suitable for wooden doors and compatible with most UK 60 mm backset nightlatches.[11][10] | This lock works with a compatible nightlatch rather than a euro cylinder or multipoint smart-lock retrofit. The standalone polished-brass product does not include professional installation.[11][10] | Yale lists PIN code, key tag, key card and remote-fob access. Virtual keys and Yale Home app sharing are available after adding a compatible Yale module and connectivity hardware.[11][10] | For Yale Home remote features, Yale specifies a Yale Access Module and Connect Wi-Fi Bridge. Without internet, local PIN, card, tag or fob access remains available.[11][12] | The lock uses four AA batteries, gives a low-battery warning and has a 9 V external emergency-power connection. Yale also lists an 80 dB tamper alarm and incorrect-PIN protection.[10][11] | The standalone SKU does not include the Yale Access Module or Connect Wi-Fi Bridge required for connected remote features. Yale's Access Module plus Connect Wi-Fi Bridge product page displayed £100.00 when consulted.[10][12] |
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