eufy Video Doorbell E340 review: the smart doorbell with a dual camera

The Video Doorbell E340 is the piece of home automation that has repaid its cost best in my house. No subscriptions, a dual camera that finally shows me the parcel on the ground, a wireless chime indoors, and colour night vision that doesn't feel like a marketing gimmick. After a year of use, here's what really works.

Category: Smart Wi-Fi video doorbell with dual camera, colour night vision and local storage
Test period: daily use for about a year at the front door of my home

Review summary (for those in a hurry):

• What it is: a Wi-Fi video doorbell with a dual camera (2K front-facing + 1600×1200 pointing at the floor for parcels), colour night vision, a wireless chime included and 8 GB of local storage
• Who it's for: anyone who gets a lot of deliveries and is fed up with the classic problem of 'the parcel is in front of the door but you can't see it from the camera up high'

The problem the dual cam solves

All the classic "smart" video doorbells share the same weakness: the camera sits high up, frames the face of whoever rings, and that's it. The parcel on the ground in front of the door is a blind spot. When the courier puts the package down and leaves, the camera may record the courier's face, but you can no longer see the parcel. The E340 solves this with a second camera angled downwards, which eufy calls "package view": it films exactly the floor area in front of the door. The result: you see the parcel, you see if anyone takes it away, and the "Delivery Guard" AI can notify you when a parcel arrives and when it is moved.

Resolution and image: 2K + 1600×1200, done well

The main camera is a 2K (2048×1536) unit with a 160° diagonal field of view, enough to cover a visitor standing at the door from head to toe. The lower camera is a 1600×1200 unit optimised to frame the floor in front of the threshold. The two images can be viewed separately in the app, or in a combined (split-screen) view. The quality is good, not sensational: the 2K shows enough detail to recognise faces and read delivery labels; in strong backlight (sun behind the visitor) the HDR does its job, but can saturate slightly.

Colour night vision: the claim is real

Eufy says the E340 is the first video doorbell with full-colour night vision. In practice, the combination of IR + a built-in front LED brings usable colour out to around 4 metres. It isn't the light of a floodlight, it's a "colour light" sufficient to tell the colour of a jacket or of a car parked in front of the house. For recognising a face it is significantly better than classic black-and-white IR, and the image doesn't have the greenish tint of some more rudimentary systems.

Installation: wired or battery, I pick whichever suits me

One feature I appreciate is the flexibility of power: the same device can run in wired mode on your existing doorbell wires (8-24V AC, at least 10VA) or in battery mode, with the removable rechargeable battery included. I wired it into the old doorbell system and added a dedicated 16V transformer because the old one didn't deliver the required power. For anyone renting who doesn't want to modify the wiring, battery mode gives roughly 3-4 months of life with average use (10-15 triggers a day) before recharging via USB-C.

Wired installation takes 30-40 minutes if you know what you're doing: you remove the old doorbell, fix the mounting bracket, connect the two wires to the screw terminals, mount the device, connect it to Wi-Fi (2.4 GHz) through the eufy app and pair it with the wireless chime included. The chime is a small speaker to put inside the house: it plugs into any socket and rings when someone presses the button. There's no need for a separate "bridge" device, as with some Ring models.

Wireless chime and smart home integration

The wireless chime included in the box is a detail that doesn't look like much but changes the experience. You put it in the kitchen or living room, and when someone presses the button you hear the sound in the house, even if your phone is charging in another room. There's a choice of several ringtones and the volume is adjustable. In my daily use, the chime is what made the video doorbell "adopted" by everyone at home, not just by me with the phone in my pocket.

On the smart home side, the E340 works with Alexa (you can see the live feed on an Echo Show) and Google Assistant (on a Nest Hub). No Apple HomeKit, which is the limitation for anyone living in the Apple ecosystem. For HomeKit you need to look elsewhere or add an Indoor Cam E220 in the other rooms.

AI and detection: people, parcels, familiar faces

The on-device AI recognises people and parcels with good accuracy after a few days of calibration. I set notifications only for person or parcel detection, excluding generic motion (leaves, the neighbour's cat, sun shadows). The result: 4-6 useful notifications a day. If you add a HomeBase 3 to the ecosystem, the E340 enables BionicMind face recognition, which learns to recognise familiar faces (family, frequent friends, neighbours) after 5-10 examples and notifies you only when someone unrecognised rings. It's the difference between "someone at the door" and "a stranger at the door".

8 GB of storage and no subscription

The E340 records locally on its 8 GB onboard, enough for about 90 days of clips with average use. No Ring Protect, no Arlo Secure: the three-year TCO is significantly lower than the competition. If you want remote backup, eufy offers an optional cloud plan at about €2,99/month for a single device, but 95% of users — me included — have never felt the need.

Comparison with the competition

Full spec sheet

Frequently asked questions

Does it work with a traditional doorbell that's already installed? Yes. The E340 connects to the two wires of your existing doorbell (8-24V AC, at least 10VA). For older systems a dedicated transformer may be needed. Alternatively you can use it on battery without modifying the wiring.

Is colour night vision really useful? Yes, up to about 4 metres. It makes a real difference compared with classic black-and-white IR for recognising faces and colours (clothes, cars). Beyond 4 metres the system switches automatically to IR.

Do I need a subscription to record? No. The E340 records locally on its internal 8 GB (~90 days of clips with average use). The Eufy Cloud subscription is optional, not mandatory.

Can I use it with HomeKit? No. It works with Alexa and Google Assistant, not with Apple HomeKit. For HomeKit you can pair it with the Indoor Cam E220 indoors.

Does the wireless chime work anywhere in the house? The chime connects to the doorbell by radio at 433 MHz. Typical range is ~30 metres in a home environment, and it passes through ordinary walls. In large houses or with very thick walls a second chime may be needed.

How long does the battery last? With average use (10-15 triggers a day) about 3-4 months. With low use up to 6 months. Charging via USB-C takes about 6-8 hours.

More eufy reviews on SpazioITech: eufy SoloCam S340 · eufy HomeBase 3 · eufy Floodlight Cam E340 · eufy SoloCam E30 · eufy SoloCam S230 · eufy Indoor Cam E220 · eufy Indoor Cam C210 · eufy Indoor Cam C120 · eufy Wall Light Cam S100 · eufyCam 2C.

Translated from the Italian original. Read in Italian