Nuki Smart Lock Ultra vs Philips 4200 Series Smart Deadbolt with Door Lever

The Philips 4200 Series Smart Deadbolt with Door Lever comes out ahead overall, with weather-rated hardware and one-time, scheduled and anti-peep passcodes built into its keypad. The Nuki Smart Lock Ultra still stands out as Nuki's flagship, with the strongest owner sentiment in the lineup, built-in Wi-Fi and native Matter, Apple HomeKit and SmartThings support.

The Nuki Smart Lock Ultra is a premium retrofit that mounts over an existing European euro-cylinder and needs its separate Keypad accessory for passcode or fingerprint entry, while the Philips 4200 Series Smart Deadbolt with Door Lever is a full US deadbolt and lever replacement with a fingerprint reader and keypad built in.

The Philips 4200 Series Smart Deadbolt with Door Lever comes with a backlit keypad built in, supporting one-time, recurring and anti-peep passcodes from the start. The Nuki Smart Lock Ultra supports passcode entry as well, but only after adding its separate Keypad accessory.

Yes, the Nuki Smart Lock Ultra supports geolocation auto-unlock, opening hands-free as you walk up with your phone. The Philips 4200 Series Smart Deadbolt with Door Lever only relocks on a timer after the door closes and has no geofenced auto-unlock.

Choose the Nuki Smart Lock Ultra if you have a European euro-cylinder door and want Nuki's fastest, most premium retrofit lock, with built-in Wi-Fi, Matter, Apple HomeKit and SmartThings support plus hands-free geolocation auto-unlock.

Choose the Philips 4200 Series Smart Deadbolt with Door Lever if you are replacing a US deadbolt and want weather-rated hardware plus fingerprint, keypad and flexible passcode options built into the box rather than sold as an add-on.