Door Locks · Head to head

Aqara Smart Lock U400 vs TP-Link Tapo DL100

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Aqara and TP-Link sites.
2026 verdict
For most buyers in 2026, Aqara Smart Lock U400 is the safer pick over TP-Link Tapo DL100 because of weather resistance, connectivity, and integrations. Its clearest strengths are weather resistance, connectivity, and integrations, and it still looks stronger on Lock/Unlock system and periodic password. TP-Link Tapo DL100 still makes sense if price, rating, and battery life are your priority, but most buyers should still lean toward Aqara Smart Lock U400. That is why Aqara Smart Lock U400 wins the verdict here.
vs
FeatureAqara Smart Lock U400TP-Link Tapo DL100Winner
Price$269.99$59.99TP-Link Tapo DL100
Rating4.04.5TP-Link Tapo DL100
Weather ResistanceIP65IP54Aqara Smart Lock U400
Battery Life6 months10 monthsTP-Link Tapo DL100
ConnectivityBluetooth, Thread Protocol, Other2.4 GHz WiFi, BluetoothAqara Smart Lock U400
IntegrationsGoogle Home, Alexa, Apple HomeKit, Home Assistant, MatterGoogle Home, Alexa, Samsung SmartThingsAqara Smart Lock U400
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, Physical KeyAqara Smart Lock U400
Periodic PasswordYESNOAqara Smart Lock U400
DoorbellNOYESTP-Link Tapo DL100
One-Time PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
TP-Link

TP-Link Tapo DL100

$59.99
Buy on Amazon USA
  • + Price: $59.99
  • + Rating: 4.5
  • + Battery Life: 10 months
  • - Weather Resistance: IP54 vs IP65
  • - Connectivity: 2.4 GHz WiFi, Bluetooth vs Bluetooth, Thread Protocol, Other

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U400 or TP-Link Tapo DL100?

Aqara Smart Lock U400 has the stronger overall profile in this comparison, especially for weather resistance, connectivity, and integrations.

What is the biggest difference between Aqara Smart Lock U400 and TP-Link Tapo DL100?

Price is one of the clearest differences: Aqara Smart Lock U400 lists $269.99, while TP-Link Tapo DL100 lists $59.99.

Which one looks better on price?

Aqara Smart Lock U400 is listed at $269.99, while TP-Link Tapo DL100 is listed at $59.99. TP-Link Tapo DL100 (better spec).

Who should buy Aqara Smart Lock U400?

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

Who should buy TP-Link Tapo DL100?

Choose TP-Link Tapo DL100 if your priority is price and rating and that matters more than weather resistance.

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