Winner
Updated October 2026
Data from the official Aqara and EZVIZ sites.
2026 verdict
PoE and Apple Home, or a peephole and a screen?
The Aqara Doorbell Camera G400 (Wired) wins this pairing on price, Wi-Fi 6 plus Ethernet, and native Apple HomeKit, Google, Alexa, SmartThings and Home Assistant support. It is a wired-only 2K unit with a 165-degree view, IP65 sealing and 24/7 recording to a microSD card of up to 512GB. The EZVIZ CP4 is the better-reviewed peephole camera with a longer two-year warranty and a 4.3-inch indoor screen, but it ships at 1080p, is not weatherproof, and has no HomeKit at all. Pick the Aqara Doorbell Camera G400 (Wired) for a hardwired Apple or NVR setup; pick the EZVIZ CP4 when the door only has a viewer hole to work with.
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| Feature | Aqara Doorbell Camera G400 (Wired) | EZVIZ CP4 | Winner |
|---|---|---|---|
| Rating | 4.2 | 4.3 | EZVIZ CP4 |
| Warranty | 1 year | 2 years | EZVIZ CP4 |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi, Ethernet | 2.4 GHz WiFi | Aqara Doorbell Camera G400 (Wired) |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant | Google Home, Alexa, Home Assistant | Aqara Doorbell Camera G400 (Wired) |
| Alerts | Motion, People, Packages, Animals, Vehicles, Familiar Faces | Motion, People | Aqara Doorbell Camera G400 (Wired) |
| Customizable Motion Zones | YES | NO | Aqara Doorbell Camera G400 (Wired) |
| Automatic Replies | YES | NO | Aqara Doorbell Camera G400 (Wired) |
| Storage | MicroSD Card Slot, Cloud | MicroSD Card Slot, Cloud | Tie |
| Indoor Custom Ringtone | YES | YES | Tie |
| Voice Changing | YES | YES | Tie |
What the differences mean
Installation
The Aqara G400 needs PoE or existing doorbell wiring with no battery option at all. The EZVIZ CP4 fits into an existing peephole and runs on a rechargeable battery, no wiring required.
Platform reach
The Aqara G400 works natively with Apple HomeKit, Google Home, Alexa, SmartThings and Home Assistant. The EZVIZ CP4 has no Apple Home support and no SmartThings.
Resolution
The Aqara G400 records 2K in a tall 165-degree view. The EZVIZ CP4 tops out at 1080p over a 166-degree diagonal lens.
Weatherproofing
The Aqara G400 is IP65 rated for an exposed porch. The EZVIZ CP4 is not waterproof at all, so it belongs on a sheltered door.
Warranty
The EZVIZ CP4 carries a two-year warranty against the Aqara G400's one year.
Which one to buy if
- you have PoE or doorbell wiring and want Apple HomeKit
The Aqara Doorbell Camera G400 (Wired) works natively with HomeKit Secure Video.
- your door only has a peephole and no wiring
The EZVIZ CP4 replaces a door viewer with no drilling or cabling at all.
- the door is fully exposed to weather
The Aqara G400 is IP65 rated; the EZVIZ CP4 is not waterproof.
- you want an indoor screen instead of a phone-only alert
The EZVIZ CP4 includes a 4.3-inch touchscreen that anyone in the household can use.
Winner
$99.99
- + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Ethernet
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant
- + Alerts: Motion, People, Packages, Animals, Vehicles, Familiar Faces
- - Rating: 4.2 vs 4.3
- - Warranty: 1 year vs 2 years
Currently unavailable on Amazon USA
- + Rating: 4.3
- + Warranty: 2 years
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, 5 GHz WiFi, Ethernet
- - Integrations: Google Home, Alexa, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant
What owners say
Aqara Doorbell Camera G400 (Wired) owners who run Home Assistant or an NVR single out the RTSP and ONVIF streams for letting them record without touching any cloud service, and several say installing on PoE ended battery maintenance entirely; a handful needed to swap in a proper doorbell transformer before the unit would even pair, since Aqara is specific that there is no battery mode as a fallback. EZVIZ CP4 owners praise how the camera drops into an existing peephole with no drilling or wiring, done in well under half an hour including app setup, and like that anyone in the household, including children, can use the indoor touchscreen; their complaint is battery life that depends entirely on how busy the doorway is, down to about a week on a street-facing door.
Frequently Asked Questions
Which is better overall: Aqara Doorbell Camera G400 (Wired) or EZVIZ CP4?
The Aqara Doorbell Camera G400 (Wired) is better overall, with 2K resolution, HomeKit, Wi-Fi 6, Ethernet and RTSP. The EZVIZ CP4 is better reviewed, has a two-year warranty and installs in a peephole with no wiring.
What is the biggest difference between the Aqara Doorbell Camera G400 (Wired) and the EZVIZ CP4?
Power and platform. The Aqara Doorbell Camera G400 (Wired) is a PoE or 8-24V outdoor doorbell with native HomeKit Secure Video. The EZVIZ CP4 is a battery peephole camera with an indoor touchscreen and no HomeKit.
Can the Aqara Doorbell Camera G400 (Wired) run on battery?
No. The Aqara Doorbell Camera G400 (Wired) needs PoE or low-voltage doorbell wiring and has no battery backup. The EZVIZ CP4 is battery-only.
Do both record locally without a subscription?
Yes. The Aqara Doorbell Camera G400 (Wired) can record 24/7 to a microSD card of up to 512 GB. The EZVIZ CP4 records events to a microSD card of up to 512 GB. Package and familiar-face alerts on the Aqara still sit behind a subscription.
Who should buy the Aqara Doorbell Camera G400 (Wired)?
Apple Home, Home Assistant and NVR users who can supply PoE or 8-24V wiring and want 2K, RTSP/ONVIF and local 24/7 recording.
Who should buy the EZVIZ CP4?
Renters and apartment owners who cannot wire the door, already have a peephole, and want an indoor screen with event recording on a card.
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