Device profile · Specifications & compatibility
Aqara Smart Lock U400
Aqara · Door Locks · Model DL-D06E
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- Aqara Smart Lock U400 lists Matter; Apple Home; Apple Home Key.
- Verify the exact device type, firmware and features exposed in your chosen platform.
- Matter support is not proof of feature parity.
Browse more from Aqara or explore all door locks in our catalog.
- Recorded year
- 2026
- Recorded warranty
- ?
- Weight
- ?
The details that shape your choice
Aqara Smart Lock U400 Quick Features
Start with these specifications, then check the full details and conditions below.
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From specification to decision
Aqara Smart Lock U400: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
Matter support is listed, making it a candidate for a compatible Matter setup after model and feature checks. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter details →Apple Home support is listed as an integration option. Check the model, firmware, exposed controls and any additional hardware requirements.
View Apple Home details →A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant details →
What to consider
A microSD card slot is listed as unavailable; check the alternative storage routes.
View microSD card slot details →
Still needs verification
Confirm these details if they matter to your setup.
Questions About Aqara Smart Lock U400
Does Aqara Smart Lock U400 support Matter?
Yes, according to the listed specifications. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter specifications →Does Aqara Smart Lock U400 work with Apple Home?
Yes, according to the listed specifications. Check the model, firmware, exposed controls and any additional hardware requirements.
View Apple Home specifications →Does Aqara Smart Lock U400 support Thread connectivity?
Thread is listed as “Thread Border Router required”. The stated condition applies to this feature. Thread connectivity alone does not establish Matter support or a border-router role. Check those requirements separately.
View Thread specifications →Does Aqara Smart Lock U400 support Apple home key?
Yes, according to the listed specifications. Home key is a specific entry method. Apple Home compatibility alone does not establish home key support. Tap to unlock and UWB hands-free unlock with iPhone or Apple Watch (requires Thread-enabled Apple Home hub)
View Apple Home Key specifications →Does Aqara Smart Lock U400 work with Home Assistant?
Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant specifications →Explore the full picture
Aqara Smart Lock U400 Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
0 of 45 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →
Lock System8 fields
| Remote | YesDetails & conditionsAqara Hub / Thread Border Router required for remote access |
|---|---|
| Bluetooth | Yes |
| Passcode | YesDetails & conditionsTouchscreen keypad |
| Fingerprint | Yes |
| Face Recognition | No |
| Nfc Tag | Yes |
| Apple Home Key | YesDetails & conditionsTap to unlock and UWB hands-free unlock with iPhone or Apple Watch (requires Thread-enabled Apple Home hub) |
| Physical Key | YesDetails & conditionsRekeyable mechanical key |
Integrations6 fields
| Google Home | YesDetails & conditionsVia Matter over Thread: Aqara lists Apple Home, Home Assistant, Google Home, Amazon Alexa and Samsung SmartThings, each needing a Thread-enabled Matter controller of that ecosystem. |
|---|---|
| Alexa | YesDetails & conditionsVia Matter over Thread: Aqara lists Apple Home, Home Assistant, Google Home, Amazon Alexa and Samsung SmartThings, each needing a Thread-enabled Matter controller of that ecosystem. |
| Apple Home | Yes |
| SmartThings | YesDetails & conditionsVia Matter |
| Home Assistant | Yes |
| Matter | Yes |
Alerts4 fields
| Door Lock Unlock | Yes |
|---|---|
| Tamper Proof Alert | YesDetails & conditionsForced entry and door left ajar alerts |
| Low Battery Alert | YesDetails & conditionsLow battery notification when battery level drops to 20% |
| Multiple Unlocking Failure Alert | Not recorded |
Automatic Lock3 fields
| Away | No |
|---|---|
| After Door Closed | YesDetails & conditionsBuilt-in gyro sensor detects the door closing and locks automatically |
| Geolocation | Not recorded |
Connectivity7 fields
| 2.4 GHz Wi-Fi | No |
|---|---|
| 5 GHz Wi-Fi | No |
| Bluetooth | Yes |
| Z Wave | No |
| Zigbee | No |
| Thread | Thread Border Router required |
| Other | YesDetails & conditionsUWB (Ultra-Wideband), NFC |
Features5 fields
| One Time Password | Yes |
|---|---|
| Periodic Password | Yes |
| Anti Peep Password | Yes |
| Emergency Fingerprint | No |
| Doorbell | No |
Power3 fields
| Battery Type | Built-in |
|---|---|
| Battery Life | 6 months |
| Backup Battery | USB-C Emergency Port |
Sensors1 fields
| Open Close | Not recorded |
|---|
Video8 fields
| Hd Video | No |
|---|---|
| 2k Video | No |
| Night Vision | No |
| Internal Storage | No |
| microSD card slot | No |
| Motion Detection | No |
| Range Of Detection | Not applicable / unspecified |
| Customizable Area | No |
How this device compares
Aqara Smart Lock U400 vs Other Similar Models
Statistical context from 47 door locks in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
Apple Home Key: 11 of 47 known answers are Yes
Lock System: 23% among explicit Yes/No answers; 0 of 47 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Nfc Tag: 14 of 47 known answers are Yes
Lock System: 30% among explicit Yes/No answers; 0 of 47 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Tamper Proof Alert: 14 of 23 known answers are Yes
Alerts: 61% among explicit Yes/No answers; 24 of 47 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
7 of 47 models are from Aqara
Counts door locks listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Aqara Smart Lock U400 vs Similar Door Locks
See how Aqara Smart Lock U400 stacks up against other door locks in this catalog. Compare specifications, compatibility and pricing.
Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.