# Which smart door lock is compatible with the most smart home systems? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which smart door lock is compatible with the most smart home systems?

## Products

### Nuki Nuki Smart Lock 4th Gen
```yaml
product: nuki-nuki-smart-lock-4th-gen
brand: Nuki
price_gbp: null
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
keypad: Optional (Nuki Keypad 2 / Keypad 2 NFC available separately)
lock_type: Retrofit (mounts over existing deadbolt)
auto_unlock: Yes (uses GPS geofence + Bluetooth)
battery_life: 6
connectivity: Bluetooth, Matter, Thread (upgradeable), Wi‑Fi (Pro model / Remote Access option)
bluetooth_range: 10
smart_home_compatibility: Apple Home (HomeKit), Google Home, Amazon Alexa, Samsung SmartThings, Home Assistant (via Matter)
```

- **Price:** £None [^1]
- **Summary:** The Nuki Smart Lock 4th Gen is a retrofit smart deadbolt that mounts over your existing thumbturn and adds Bluetooth and Matter-based smart control, with optional Wi‑Fi/Pro variants for built‑in remote access. It offers Auto Unlock via geofencing and Bluetooth, USB‑C rechargeable battery (approx six months), and wide smart home compatibility through Matter. It suits renters and homeowners who want fast, non‑destructive installation and broad ecosystem support.
- **Ideal For:** Ideal for users wanting maximum smart home compatibility because it supports Matter (over Thread/Wi‑Fi), HomeKit, Google Home, Alexa and SmartThings, enabling integration with the most systems.

### Schlage Schlage Encode Plus Smart Wi-Fi Deadbolt
```yaml
product: schlage-schlage-encode-plus-smart-wi-fi-deadbolt
brand: Schlage
price_gbp: 246.6
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
keypad: Backlit touchscreen numeric keypad (4-8 digit codes)
lock_type: Deadbolt
auto_unlock: false
battery_life: 6
connectivity: Wi‑Fi, Bluetooth, NFC, Thread, Z‑Wave Plus
smart_home_compatibility: Works with Apple HomeKit, Apple Home Keys, Amazon Alexa, Google Assistant, Ring, Homey, Schlage Home App
```

- **Price:** £246.6 [^2]
- **Summary:** Built-in Wi‑Fi, Bluetooth, NFC (Apple Home Key) and Z‑Wave Plus provide remote access, voice assistant integration, and tap-to-unlock with iPhone/Apple Watch; includes a backlit touchscreen keypad, built‑in alarm, and battery operation. Suited for homeowners who want broad smart home compatibility and Apple Home Key support without needing an external bridge.
- **Ideal For:** Ideal for users wanting maximum smart home compatibility because it supports built‑in Wi‑Fi, Bluetooth, NFC (Apple Home Key), Thread, and Z‑Wave Plus enabling integration with Apple HomeKit, Alexa, Google Assistant, Ring, and more.

### Yale Yale Assure Lock SL (with Wi-Fi or Z-Wave Module)
```yaml
product: yale-yale-assure-lock-sl-with-wi-fi-or-z-wave-module
brand: Yale
price_gbp: 209.13
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
keypad: Touchscreen
lock_type: Deadbolt
auto_unlock: true
connectivity: Wi-Fi, Bluetooth, Z-Wave (with module)
smart_home_compatibility: Apple Home (HomeKit), Amazon Alexa, Google Assistant, Ring Alarm, Samsung SmartThings, Z-Wave systems, Philips Hue, Nest (via integrations)
```

- **Price:** £209.13 [^3]
- **Summary:** The Yale Assure Lock SL is a key-free touchscreen deadbolt that supports Yale Access app control and can add Wi‑Fi or Z‑Wave connectivity via plug‑in modules to enable remote access and integrate with multiple smart home systems. It offers PIN code access, auto-unlock, DoorSense support and works with major voice assistants and smart home hubs when fitted with the appropriate module. It is sold in multiple finishes and configurations.
- **Ideal For:** Users who need the widest smart home compatibility because the lock accepts plug‑in Wi‑Fi and Z‑Wave modules and supports Apple HomeKit, Alexa, Google Assistant, SmartThings and other Z‑Wave ecosystems when the appropriate module is installed.

### August August Wi-Fi Smart Lock
```yaml
product: august-august-wi-fi-smart-lock
brand: August
price_gbp: 149.9
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
keypad: Optional (sold as separate Yale Keypad; keypad available in bundles)
lock_type: Electronic deadbolt (retrofits existing single-cylinder deadbolt)
auto_unlock: Yes (geo-fencing auto-unlock)
battery_life: 3
connectivity: Wi‑Fi, Bluetooth, 2.4GHz and 5GHz Wi‑Fi (802.11 b/g/n)
smart_home_compatibility: Apple HomeKit, Amazon Alexa, Google Assistant
```

- **Price:** £149.9 [^4]
- **Summary:** Built-in Wi‑Fi smart lock that retrofits over existing single-cylinder deadbolts to provide remote lock/unlock, activity feed, DoorSense, auto-lock and auto-unlock. Works with major voice assistants and can be paired with an optional Yale keypad for code or fingerprint entry. Suitable for homeowners who want Wi‑Fi built into the lock without an extra bridge.
- **Ideal For:** This lock suits someone seeking maximum smart home compatibility because it has built-in Wi‑Fi and explicitly supports Apple HomeKit, Amazon Alexa and Google Assistant, enabling broad integration.

### Kwikset Kwikset Halo Select
```yaml
product: kwikset-kwikset-halo-select
brand: Kwikset
price_gbp: null
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
keypad: Touchscreen keypad (backlit)
lock_type: Deadbolt
auto_unlock: Geofence auto-unlock
connectivity: WiFi; Matter; Bluetooth
smart_home_compatibility: Amazon Alexa; Google Home; Apple HomeKit; SmartThings; Matter
```

- **Price:** £None [^5]
- **Summary:** Halo Select is a Wi‑Fi and Matter enabled touchscreen smart deadbolt with SmartKey security, touchscreen keypad, geofence auto‑unlock and support for voice control and app-based remote access. It suits homeowners who want wide smart‑home compatibility (Matter, Alexa, Google, Apple HomeKit) and keyless entry without a separate hub. 
- **Ideal For:** Suitable for users wanting the broadest smart home compatibility because it supports Matter plus native Wi‑Fi and works with Alexa, Google Home, Apple HomeKit and SmartThings.

---
## References & Sources
[^1]: Nuki Support (product pages & docs), accessed 2026-06-10. https://help.nuki.io/hc/en-001/articles/360016374037-Initial-setup-of-your-Smart-Lock
[^2]: The Home Depot, accessed 2026-06-10. https://www.homedepot.com/p/Schlage-Century-Matte-Black-Electronic-Encode-Plus-Smart-WiFi-Deadbolt-with-Alarm-BE499WB-V-CEN-622/322082407
[^3]: Home Depot, accessed 2026-06-10. https://www.homedepot.com/p/Yale-Assure-Lock-2-Smart-Door-Lock-with-WiFi-and-Touchscreen-Keypad-Satin-Nickel-YRD420-WF1-619/322081818
[^4]: Lowe's, accessed 2026-06-10. https://www.lowes.com/pd/August-Wi-Fi-Smart-Lock-Silver/1003164106
[^5]: Kwikset (official), accessed 2026-06-10. https://www.kwikset.com/products/detail/halo-select-touchscreen-wi-fi-and-matter-enabled-smart-lock