Door Locks · Head to head

Eufy Security Smart Lock S230 vs Nuki Smart Lock Ultra

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Eufy and Nuki sites.
2026 verdict
Eufy Security Smart Lock S230 edges out Nuki Smart Lock Ultra in 2026, led by price, weather resistance, and battery life. What pushes it ahead is price, weather resistance, and battery life, and one-time password and periodic password keeps the advantage from looking narrow. The only strong reason to choose Nuki Smart Lock Ultra is if rating, warranty, and connectivity is more important to you than the overall verdict. That is enough to make Eufy Security Smart Lock S230 the better pick for most buyers.
vs
FeatureEufy Security Smart Lock S230Nuki Smart Lock UltraWinner
Price$159.99€349.00Eufy Security Smart Lock S230
Rating4.34.5Nuki Smart Lock Ultra
Warranty18 months2 yearsNuki Smart Lock Ultra
Weather ResistanceIP65NOEufy Security Smart Lock S230
Battery Life1 year6 monthsEufy Security Smart Lock S230
Connectivity2.4 GHz WiFi2.4 GHz WiFi, Bluetooth, Thread ProtocolNuki Smart Lock Ultra
IntegrationsGoogle Home, AlexaGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterNuki Smart Lock Ultra
Lock/Unlock SystemRemote, Passcode, Fingerprint, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, Physical KeyNuki Smart Lock Ultra
One-Time PasswordYESKeypad requiredEufy Security Smart Lock S230
Periodic PasswordYESKeypad requiredEufy Security Smart Lock S230
Anti-peep PasswordYESNOEufy Security Smart Lock S230
Emergency FingerprintNONOTie

Frequently Asked Questions

Which is better overall: Eufy Security Smart Lock S230 or Nuki Smart Lock Ultra?

Eufy Security Smart Lock S230 has the stronger overall profile in this comparison, especially for price, weather resistance, and battery life.

What is the biggest difference between Eufy Security Smart Lock S230 and Nuki Smart Lock Ultra?

Price is one of the clearest differences: Eufy Security Smart Lock S230 lists $159.99, while Nuki Smart Lock Ultra lists €349.00.

Which one looks better on price?

Eufy Security Smart Lock S230 is listed at $159.99, while Nuki Smart Lock Ultra is listed at €349.00. Eufy Security Smart Lock S230 (better spec).

Who should buy Eufy Security Smart Lock S230?

Choose Eufy Security Smart Lock S230 if your priority is price and weather resistance and that matters more than rating.

Who should buy Nuki Smart Lock Ultra?

Choose Nuki Smart Lock Ultra if your priority is rating and warranty and that matters more than price.

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