Our verdict: The Eufy Video Doorbell E340 (Battery Powered) T8214111 ranks 8th of the 10 video doorbells we compare, with 8.4 out of 10.
Eufy Video Doorbell E340 (Battery Powered) T8214111
8.4/10
The Eufy E340 is a battery or wired video doorbell with two cameras, one for the visitor and one for the doorstep. It stores clips on the doorbell itself, so it suits shoppers who want to avoid a monthly fee.
Dual cameras: a 2K front lens with a 160 degree view and a second lens aimed at the doorstep
8 GB of built-in storage holds roughly three months of events; no fee needed
Detachable battery, or wired power from an 8 to 24 volt source
Works with Alexa and Google Assistant, and with an existing mechanical chime
Keep in mind
2.4 GHz Wi-Fi only
No Apple HomeKit support
Wired mode still needs the battery installed
Why the Eufy T8214111 scores 8.4
Each bar shows where it places among the 10 video doorbells in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.
How happy owners are8th of 10
How many rated it5th of 10
How new it is5th of 10
Why it sits behind the Arlo Video Doorbell 2K (2nd Gen) AVD4001
The Arlo Video Doorbell 2K (2nd Gen) AVD4001 (8.5) beats the Eufy Video Doorbell E340 (Battery Powered) T8214111 (8.4) because it leaves owners a little happier.
About the Eufy T8214111
The E340 has a 2K front camera with a 160 degree view. A second, lower camera looks down at the doorstep to catch packages. TechGearLab, an independent review site, found the upper camera sharp and the lower one lower in resolution. Distant objects look somewhat soft by day. Night vision is in color up to 16 ft using 2 IR LEDs, and the same review found the black and white infrared mode clearer for reading details.
Clips save to 8 GB of on-device storage. Eufy puts that at about 90 days, based on 30 twenty-second clips a day. Notifications carry no subscription fee. Cloud backup is optional and sold through the eufy Plus Membership. Storage can be expanded through HomeBase. The doorbell does human detection, package detection and face recognition, and TechGearLab found person detection reliable to about 20 feet and face recognition to about 10 feet.
Power is either the removable quick-release battery pack, which charges fully in about 5 hours, or a wired 8 to 24 V source rated above 10VA. Wired mode still needs the battery installed. The doorbell is rated IP65 for weather. It works with Alexa and Google Assistant but not Apple HomeKit. For a chime it works with an existing mechanical chime, a HomeBase S280 or S380, the eufy Minibase Chime (T8023), and Alexa or Google devices. It does not work with the older eufy Wi-Fi Chime (T8020) or eufy Chime (T8740/T8742).
What owners report about the Eufy T8214111
Owner feedback we could read for this exact model is limited, and most of it is about battery life. Owners praise the picture and the lack of a subscription fee in independent reviews, but the owner threads we opened are mostly complaints.
On the Eufy community forum, an owner on battery power reported losing half the charge in about a week with motion zones covering the property. Another owner said the same. The workaround that owner settled on was setting the doorbell to wake only when the button is pressed, because passing cars kept triggering alerts. Busy streets and wide motion zones look like the main drain.
Wired owners report a separate problem. One owner who had wired the doorbell for over a year found the battery sitting near full, then the doorbell stopped working in cold weather and only came back after a USB-C charge. That is a single report, but it fits the requirement that the battery stays installed in wired mode.
Who the Eufy T8214111 suits
The E340 suits a home that wants a package-watching second camera and local storage without paying monthly. It fits a house with a 2.4 GHz Wi-Fi network and either a doorbell transformer in the right range or a willingness to recharge the battery. It also works for renters who can run it on battery.
Look elsewhere if you use Apple HomeKit, since it is not supported, or if your router only offers 5 GHz. Houses on a busy street should expect frequent battery recharging unless they limit motion zones. If you want a doorbell that never needs charging, the Google Nest Doorbell (Wired, 3rd Gen) is the better fit. For an Alexa household that prefers an easier default, the Ring Battery Doorbell Plus is another option.
Questions about the Eufy T8214111
Where do I find the Eufy T8214111 manual and installation instructions?
Eufy's US product page for the T8214111 is the starting point. For wiring, the doorbell needs a 8 to 24 V power source rated above 10VA, and the battery must stay installed even in wired mode.
Is the Eufy E340 (T8214111) worth it?
Yes, if you want two cameras and local storage with no monthly fee. It is less suited to HomeKit users, 5 GHz-only networks, or busy streets where battery drain is a problem.
Does the Eufy E340 work wired?
Yes. It runs on a wired 8 to 24 V source rated above 10VA, but the battery must still be installed.
Why is my Eufy E340 battery draining fast or not charging?
Frequent motion alerts are the usual cause on battery power. An owner on Eufy's community forum fixed it by waking the doorbell only on button presses. In wired mode, some owners report charging problems, and a USB-C charge restored one.
Does the Eufy E340 need a subscription?
No. Notifications carry no subscription fee and clips save to the built-in 8 GB. Cloud backup is optional through the eufy Plus Membership.
Does the Eufy E340 work with 5 GHz Wi-Fi?
No. The doorbell supports 2.4 GHz Wi-Fi only, so your router needs a 2.4 GHz network for setup and everyday use.
Other video doorbell picks
The other badge winners in our video doorbells ranking.
Every score here comes from our ranking model; no editor sets the order. We haven't read the review sites for this guide yet, so for now it is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 16 models for this guide before settling on these ten.
Brands can't pay to be included or to move up. We last checked these picks in November 2026.
