20% OFF
$119.98
$149.99
Updated October 2026
Data from the official Eufy and EZVIZ sites.
2026 verdict
Want a doorbell that fits your existing peephole instead of new wiring?
For that job, the EZVIZ CP4 is the better buy of this pair, and it costs less too. It carries the higher owner rating, a longer 2-year warranty, indoor custom ringtones and a voice changer, on top of a 4.3-inch indoor touchscreen that doubles as the chime. The Eufy Video Doorbell E340 answers with dual cameras (a head-to-toe view that catches packages on the ground), 2K video with color night vision, and package and familiar-face alerts plus automatic replies, none of which the EZVIZ CP4 offers. Both skip Apple HomeKit and Matter and record with no subscription. Pick the EZVIZ CP4 for an apartment door that already has a viewer and wants an indoor screen; pick the Eufy Video Doorbell E340 for a wired or battery front-door install that watches packages as well as visitors.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
15% OFF
£109.99
£129.99
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Eufy Video Doorbell E340 | EZVIZ CP4 | Winner |
|---|---|---|---|
| Price | $119.98 | £109.99 | EZVIZ CP4 |
| Rating | 4.0 | 4.3 | EZVIZ CP4 |
| Warranty | 1 year | 2 years | EZVIZ CP4 |
| Alerts | Motion, People, Packages, Familiar Faces | Motion, People | Eufy Video Doorbell E340 |
| Voice Changing | NO | YES | EZVIZ CP4 |
| Automatic Replies | YES | NO | Eufy Video Doorbell E340 |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Integrations | Google Home, Alexa, Home Assistant | Google Home, Alexa, Home Assistant | Tie |
| Storage | Internal, Cloud | MicroSD Card Slot, Cloud | Tie |
What the differences mean
How they mount
The EZVIZ CP4 replaces an existing door viewer, screwing into the peephole hole from 14 to 50 mm with no drilling. The Eufy Video Doorbell E340 is a conventional wall-mounted doorbell, wired or on a rechargeable battery.
What they see
The Eufy Video Doorbell E340 uses two cameras, a main 2K lens for the visitor and a second angled down for packages on the ground, while the EZVIZ CP4 has one 1080p lens with a wider 166-degree view.
Where clips are stored
The EZVIZ CP4 records to a microSD card of up to 512 GB. The Eufy Video Doorbell E340 has 8 GB of built-in storage with no card slot, so a Eufy HomeBase is recommended for full 24/7 recording.
Chime
The EZVIZ CP4's indoor touchscreen is itself the chime, with up to five ringtones. The Eufy Video Doorbell E340 needs a separate add-on chime, or an Alexa or Google speaker, to ring indoors at all.
Package and face alerts
The Eufy Video Doorbell E340 adds AI package detection and familiar-face recognition that the EZVIZ CP4 does not list, useful for anyone watching deliveries as much as visitors.
Which one to buy if
- your door already has a peephole and you rent or cannot drill
The EZVIZ CP4 replaces the existing viewer in minutes with no wiring or wall damage.
- you want to see packages on the ground as well as the visitor
The Eufy Video Doorbell E340's second downward camera is built specifically for that head-to-toe view.
- the doorway faces a busy street with constant foot traffic
The Eufy Video Doorbell E340 can be hardwired, where the EZVIZ CP4's fixed PIR sensitivity drains its battery fast on a busy walkway.
- you want an indoor touchscreen that anyone in the house can use
The EZVIZ CP4's 4.3-inch screen doubles as chime and viewer, with no phone required to see who is there.
- color night vision or AI familiar-face alerts matter to you
Only the Eufy Video Doorbell E340 offers color night vision and familiar-face detection.
20% OFF
$119.98
$149.99
- + Alerts: Motion, People, Packages, Familiar Faces
- + Automatic Replies: YES
- - Price: $119.98 vs £109.99
- - Rating: 4.0 vs 4.3
Winner
15% OFF
£109.99
£129.99
- + Price: £109.99
- + Rating: 4.3
- + Warranty: 2 years
- - Alerts: Motion, People vs Motion, People, Packages, Familiar Faces
- - Automatic Replies: NO vs YES
What owners say
Owners of both doorbells praise how easy installation is and how clearly they show a visitor at night. EZVIZ CP4 owners repeatedly highlight that it drops into an existing peephole with no drilling and no wiring, finishing in well under half an hour, and they like that the indoor touchscreen means anyone in the house, including elderly parents and children, can see who is there without leaning into a tiny lens. Their biggest complaint is battery life on a busy doorway, where sensitivity has no way to exclude a walkway. Eufy Video Doorbell E340 owners single out the dual-camera view of packages on the ground as well as the person at the door, and the no-subscription local recording, but they warn the app can feel clunky and that a separate chime is needed to ring indoors.
Frequently Asked Questions
Which is better overall: Eufy Video Doorbell E340 or EZVIZ CP4?
The EZVIZ CP4 is better overall on owner rating, warranty, indoor custom ringtones and a voice changer, and it costs less. The Eufy Video Doorbell E340 is the dual-camera 2K doorbell with package and familiar-face detection plus automatic replies.
What is the biggest difference between the Eufy Video Doorbell E340 and the EZVIZ CP4?
How they mount and what they see. The EZVIZ CP4 replaces a peephole and shows visitors on a 4.3-inch indoor screen. The Eufy Video Doorbell E340 is a wall-mounted outdoor doorbell with two cameras, so it can look down at packages as well as at a visitor's face.
Do the Eufy Video Doorbell E340 and the EZVIZ CP4 record without a subscription?
Yes. The EZVIZ CP4 records to a microSD card of up to 512 GB. The Eufy Video Doorbell E340 records to 8 GB of built-in storage or a Eufy HomeBase. Cloud plans on both sides are optional.
Who should buy the EZVIZ CP4?
Anyone who cannot drill a wall, already has a door viewer, and wants an indoor touchscreen with fee-free microSD clips and a voice changer.
Who should buy the Eufy Video Doorbell E340?
Buyers who want 2K dual-camera coverage, package and familiar-face alerts, automatic replies and color night vision on a weather-sealed outdoor doorbell, and who do not need a peephole install.
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