Door Locks · Head to head

Aqara Smart Lock U400 vs Philips Wi-Fi Smart Deadbolt DDL242X

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Aqara and Philips sites.
2026 verdict
Aqara Smart Lock U400 wins the 2026 matchup against Philips Wi-Fi Smart Deadbolt DDL242X, mainly on connectivity, integrations, and Lock/Unlock system. Its strongest advantages show up in connectivity, integrations, and Lock/Unlock system, with its broader overall balance helping widen the gap. Philips Wi-Fi Smart Deadbolt DDL242X is the better fit only for buyers who prioritize price and rating above everything else here. That keeps the verdict firmly in favor of Aqara Smart Lock U400.
vs
FeatureAqara Smart Lock U400Philips Wi-Fi Smart Deadbolt DDL242XWinner
Price$269.99$79.97Philips Wi-Fi Smart Deadbolt DDL242X
Rating4.04.4Philips Wi-Fi Smart Deadbolt DDL242X
ConnectivityBluetooth, Thread Protocol, Other2.4 GHz WiFi, BluetoothAqara Smart Lock U400
IntegrationsGoogle Home, Alexa, Apple HomeKit, Home Assistant, MatterGoogle Home, AlexaAqara Smart Lock U400
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, Physical KeyAqara Smart Lock U400
Weather ResistanceIP65YESTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U400 or Philips Wi-Fi Smart Deadbolt DDL242X?

Aqara Smart Lock U400 has the stronger overall profile in this comparison, especially for connectivity, integrations, and Lock/Unlock system.

What is the biggest difference between Aqara Smart Lock U400 and Philips Wi-Fi Smart Deadbolt DDL242X?

Price is one of the clearest differences: Aqara Smart Lock U400 lists $269.99, while Philips Wi-Fi Smart Deadbolt DDL242X lists $79.97.

Which one looks better on price?

Aqara Smart Lock U400 is listed at $269.99, while Philips Wi-Fi Smart Deadbolt DDL242X is listed at $79.97. Philips Wi-Fi Smart Deadbolt DDL242X (better spec).

Who should buy Aqara Smart Lock U400?

Choose Aqara Smart Lock U400 if your priority is connectivity and integrations and that matters more than price.

Who should buy Philips Wi-Fi Smart Deadbolt DDL242X?

Choose Philips Wi-Fi Smart Deadbolt DDL242X if your priority is price and rating and that matters more than connectivity.

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© 2026 Smart Home Compared
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