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Aqara Doorbell Camera G400 (Wired) vs Google Nest Doorbell (wired, 3rd Gen)

Full Smart Doorbells comparison in 2026

Updated October 2026
Data from the official Aqara and Google sites.
2026 verdict
HomeKit, or Google? The Aqara Doorbell Camera G400 (Wired) is the better wired doorbell of this pair, because it records 24/7 to a microSD card of up to 512 GB and supports Apple HomeKit Secure Video.
It adds PoE, Ethernet, Wi-Fi 6, RTSP and ONVIF, and its 3:4 frame shows a caller head to toe. The Google Nest Doorbell (wired, 3rd Gen) answers with 2K HDR video, on-device alerts that separate people, packages, animals and vehicles, and tight Google Home integration, but continuous history and familiar-face alerts need a Nest Aware plan and there is no microSD or RTSP. Choose the Aqara Doorbell Camera G400 (Wired) for local storage and platform breadth, or the Google Nest Doorbell (wired, 3rd Gen) if you live in Google's ecosystem.
Connectivity
  • Wi-Fi 2.4/5 GHz
  • Ethernet
vs
Connectivity
  • Wi-Fi 2.4/5 GHz
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FeatureAqara Doorbell Camera G400 (Wired)Google Nest Doorbell (wired, 3rd Gen)Winner
Price$99.99$196.81Aqara Doorbell Camera G400 (Wired)
Rating4.24.4Google Nest Doorbell (wired, 3rd Gen)
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Ethernet2.4 GHz WiFi, 5 GHz WiFiAqara Doorbell Camera G400 (Wired)
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Samsung SmartThings, Home AssistantAqara Doorbell Camera G400 (Wired)
Voice ChangingYESNOAqara Doorbell Camera G400 (Wired)
Automatic RepliesYESNOAqara Doorbell Camera G400 (Wired)
Warranty1 year1 yearTie
StorageMicroSD Card Slot, CloudInternal, CloudTie
AlertsMotion, People, Packages, Animals, Vehicles, Familiar FacesMotion, People, Packages, Animals, Vehicles, Familiar FacesTie
Customizable Motion ZonesYESYESTie
Indoor Custom RingtoneYESYESTie

What the differences mean

Local storage and subscription

The Aqara Doorbell Camera G400 (Wired) records 24/7 to a microSD card of up to 512 GB with SMB NAS backup, and its core features need no plan. The Google Nest Doorbell (wired, 3rd Gen) has no microSD slot, gives you free event clips from the past six hours plus a one-hour offline buffer, and needs Nest Aware for continuous history, longer storage and familiar faces.

Ecosystem breadth

The Aqara Doorbell Camera G400 (Wired) covers HomeKit Secure Video, Google Home, Alexa, SmartThings and Home Assistant, plus RTSP and ONVIF. The Google Nest Doorbell (wired, 3rd Gen) works with Google Home, Alexa, SmartThings and Home Assistant, but has no HomeKit, no RTSP and no Matter.

Connectivity

The Aqara Doorbell Camera G400 (Wired) can take PoE over Ethernet, or 8-24V wiring, and adds dual-band Wi-Fi 6 with WPA3. The Google Nest Doorbell (wired, 3rd Gen) is wired only over a doorbell transformer and connects by dual-band Wi-Fi, with no Ethernet and no PoE.

Video and HDR

Both shoot 2K. The Google Nest Doorbell (wired, 3rd Gen) adds HDR and a tall 1:1 frame, while the Aqara Doorbell Camera G400 (Wired) uses a 3:4 frame that is also built to show a parcel on the step and has no HDR.

Smart alerts

The Google Nest Doorbell (wired, 3rd Gen) distinguishes people, packages, animals and vehicles on the device without a plan, and puts familiar-face alerts behind Nest Aware. The Aqara Doorbell Camera G400 (Wired) keeps local motion and person detection free and gates package, vehicle, animal and face detection behind HomeGuardian.

Which one to buy if

What owners say

Aqara Doorbell Camera G400 (Wired) owners repeat two themes: native HomeKit Secure Video that opens fast in the Apple Home app, and PoE, which combines data and power in one cable and ends battery maintenance. They call the 3:4 view a genuine fix for the parcel problem and rate RTSP and ONVIF for NVR use, while complaining about the quiet bundled chime, subscription-gated package and face detection and a transformer that sometimes needs upgrading. Google Nest Doorbell (wired, 3rd Gen) owners love the 2K HDR image, the smart alerts that correctly separate people, packages and vehicles, and a Live View that loads almost instantly, but they are surprised that continuous history, longer event storage and familiar-face alerts sit behind Nest Aware, and they note the unit ships without a chime.

Frequently Asked Questions

Which is better overall: Aqara Doorbell Camera G400 (Wired) or Google Nest Doorbell (wired, 3rd Gen)?

The Aqara Doorbell Camera G400 (Wired), for buyers who want local recording and the widest platform support, including HomeKit and RTSP. The Google Nest Doorbell (wired, 3rd Gen) wins on image processing and on-device alerts if you are already a Google household, but most saved history needs Nest Aware.

What is the biggest difference between the Aqara Doorbell Camera G400 (Wired) and the Google Nest Doorbell (wired, 3rd Gen)?

Storage and ecosystem. The Aqara Doorbell Camera G400 (Wired) records locally to microSD with no subscription and supports HomeKit, RTSP and PoE, while the Google Nest Doorbell (wired, 3rd Gen) is cloud-first, needs Nest Aware for continuous history and works best inside Google Home.

Does the Google Nest Doorbell (wired, 3rd Gen) need a subscription?

Not for basic use. You get free event clips from the past six hours and a one-hour offline buffer. But continuous 24/7 video history, longer event storage and familiar-face alerts require a paid Nest Aware subscription.

Does the Aqara Doorbell Camera G400 (Wired) work with Google Home?

Yes. The Aqara Doorbell Camera G400 (Wired) streams a live view to Google Home as well as Alexa and SmartThings displays, on top of its native Apple HomeKit, Home Assistant, RTSP and ONVIF support.

Who should buy the Aqara Doorbell Camera G400 (Wired)?

Apple Home users, anyone with PoE or 8-24V wiring at the door, and buyers who want local recording with no subscription and the broadest set of integrations.

Who should buy the Google Nest Doorbell (wired, 3rd Gen)?

Google and Nest households that want sharp 2K HDR video and the most accurate on-device smart alerts in this class, and who are willing to pay for Nest Aware to keep their video history.

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