Doorbell Wire Check product guide
eufy Security Video Doorbell E340 with Dual Cameras
A porch where parcels matter and you want no monthly fee
The E340 uses two cameras, one for visitors head-to-toe and one aimed down at the step, and records to 8GB of built-in storage with no subscription. The battery pack lifts out for swapping, or you can wire it to a 16-24V supply and keep it topped up. eufy documents keeping your existing mechanical chime, and adds HomeBase, its own chime, Alexa and Google as alternatives.
Listing checked . Confirm the model, included parts and availability before ordering.
Published specifications
- Guide: model T8214; primary and secondary camera lenses with an LED beside each
- Listing: 8GB eMMC local storage, no subscription; 2K video, IP65, outdoor use
- Listing: colour dual-light night vision to a stated 16 ft (5 m), two IR LEDs
- Listing: wire to a 16-24V supply, or use the removable rechargeable battery pack
- Guide: mount at 48 in (1.2 m); 15/64 in (5.95 mm) bit for brick, concrete or stucco
- Guide and eufy: existing mechanical chime, eufy chime, HomeBase, Alexa or Google
Fit and limits
Strengths
- Second downward camera covers the doorstep instead of relying on a tall crop
- 8GB of built-in storage with recordings and playback at no monthly cost
- Battery pack lifts out for swapping, and spare packs are sold separately
Caveats
- Amazon lists a 128 GB capacity the user guide does not support; storage is 8GB eMMC
- Neither document explains how the existing mechanical chime is actually driven
- No warranty period is stated on eufy's page or on the listing
Two cameras, and what the second one is for
The E340's distinguishing feature is a second lens. The user guide's front-view diagram lists a primary camera lens near the top and a secondary camera lens lower down, with an LED light beside each. eufy's description of the split is simple: the front camera captures visitors head-to-toe, and the downward camera shows packages left on the doorstep.
That is a different answer to the same problem the square-sensor doorbells solve with a tall 1:1 frame. Instead of one very wide vertical view, you get two feeds aimed at two jobs. Amazon's fields list two video channels, consistent with that.
The user guide names the model T8214 and the listing calls it the Video Doorbell E340. Resolution is described as 2K on the listing, while Amazon's fields say an effective still resolution of 1440 pixels and a photo sensor resolution of 2 MP. Night vision is a colour dual-light system with a stated clear viewing distance of up to 16 ft (5 m) and two infrared LEDs. eufy describes the dual-light arrangement as an industry first; that is eufy's wording, which we report rather than verify.
Storage that does not need a monthly plan
The doorbell has 8GB of eMMC storage built in, and both the listing and eufy's own page make no-subscription recording the headline. Amazon's field summarises it as "Subscription Required: No", and eufy's page says that without fees you get full access to notifications and video recordings with playback at any time.
One number does not line up. Alongside the 8GB eMMC entry, Amazon's storage block also carries a "Memory Storage Capacity 128 GB" field. Nothing in the user guide mentions a memory card slot at all, and the guide's diagrams show no card door. Treat 8GB eMMC as the figure the guide supports and ask eufy about the other entry if you were counting on more.
There is an optional expansion route that is not a subscription. The user guide says the doorbell works independently once connected to your router, and separately that you can store video clips in the built-in storage of a eufy Security HomeBase 2 or S380 HomeBase, both sold separately. eufy's own comparison row describes the E340 as working standalone or with a HomeBase that is not included.
Battery you can swap, or wiring you can keep
On battery, this is one of the easier doorbells to live with because the pack comes out. The user guide's rear-view diagram shows a battery compartment, and the recharging instructions have you push a detaching pin into a hole on the top of the doorbell, lift the top off, and swap the pack. eufy says outright that you can buy an extra battery pack for quick replacement, and sells one. The guide tells you to fully charge the pre-installed pack before you mount anything.
Wired, the listing says to connect it to a 16-24V power source, which then keeps the battery topped up continuously. The user guide's framing is that with existing, working doorbell wires the doorbell is constantly powered and there is no need to detach and recharge after installation, but that the mounting position is limited to where the wires already are.
The guide's wiring steps are careful in ways worth following. Ring the existing bell first to prove the wires work; if it does not ring, the wires may be defective and you should use the battery or get an electrician. Shut off the breaker and confirm with a light switch. Either wire can go to either terminal, because there is no polarity, but make sure the two wires do not touch after connection. If the wires are too short, use the extension wires and wire nuts, or electrical tape if there is no room in the wall cavity for nuts.
What will actually ring indoors
eufy gives four routes, and the first one keeps what you already have. The user guide lists: a traditional doorbell chime if you have one, a eufy Security doorbell chime sold separately, or an Amazon Alexa Echo Show device. eufy's product-page comparison row says the same in two lines: compatible with existing chimes, and an Alexa Echo device as a chime.
The listing's bullet is the fullest version, naming the eufy HomeBase 2 (S280), HomeBase 3 (S380), the eufy Minibase Chime (T8023 and T8024), Alexa devices and Google voice assistant devices alongside your existing mechanical chime. So a household that wants to keep the old ding-dong has a documented path here, which is not true of every doorbell in this price bracket.
What neither document we read explains is the wiring detail of how an existing mechanical chime is driven, or whether any power kit or jumper is involved. If keeping your chime is the reason you are choosing the E340, confirm that with eufy for your chime type before ordering.
Mounting: height, drill size, and one placement mistake to avoid
eufy's recommended height when you are drilling fresh holes is 48 inches (1.2 m) above the ground. For a hard wall of brick, concrete or stucco, the guide specifies a 15/64 inch (5.95 mm) drill bit used through the supplied screw-hole positioning card. A Phillips screwdriver and a drill are the tools listed; the screws and the positioning card come with the doorbell.
A 15-degree mounting wedge is available as a supplementary bracket to angle the view, which matters given the second camera is aimed downward and the pair of them have to cover both the visitor and the step.
The one placement warning in the guide is specific and easy to get wrong: if you put the doorbell near a side wall, make sure that wall is not in the field of view, because the infrared light will reflect off it and blur the night vision. The guide also tells you to carry the doorbell to the spot and check the live view in the app before you drill, and to reuse existing holes and anchors where you can.
Setup, app requirements and the warranty gap
Setup means the eufy Security app and an account: download, sign in or create an account, then follow the in-app steps, scanning the QR code on the back of the doorbell. The SYNC button on the back does triple duty: a press turns the doorbell on, a two-second hold with a beep starts setup, and five quick presses within three seconds turn it off. Amazon's fields put the network on 2.4G Wi-Fi.
Detection is on-device and included: Amazon's alert-type field lists audio, motion, human and package alerts, and eufy's page adds face recognition, package detection and six quick replies. Weather resistance is listed as IP65, and the product is listed for outdoor use.
On warranty, eufy's own page gives a 30-day money-back guarantee, free shipping and what it calls a hassle-free warranty, but states no period on the pages we read, and directs questions to its support address with an order receipt. Amazon's page carries only a warranty link rather than a term. Before you buy, ask eufy for the warranty length in writing, and ask what happens if the doorbell is stolen, since neither document we read describes a theft policy.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- eufy product page for the Video Doorbell E340
- eufy Security Video Doorbell E340 user guide (T8214), attached to the listing
Primary sources checked .
Compare with
- Arlo Video Doorbell 2K (2nd Gen), Wireless or Wired
A 2.4GHz home where live view and basic alerts are enough without a plan
- TP-Link Tapo D225 2K Video Doorbell with Indoor Chime
A wired door where you want local recording and no monthly plan
- Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module
A household that already owns a Blink Sync Module
Side-by-side pages, this model next to: Arlo Video Doorbell 2K (2nd Gen), Wireless or Wired, TP-Link Tapo D225 2K Video Doorbell with Indoor Chime, Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module.