The eufy Video Doorbell E340 and the wired S330 are close enough in purpose to invite a simple price comparison, but they are not the same installation decision. The E340 is the better fit when you need flexibility around power and want a dual-camera view of the entrance. The wired S330 is the better fit when a permanent doorbell wire is already available and you want a straightforward, always-connected setup with its included chime.
The short version
When power flexibility matters
The E340 is the safer shortlist choice when you are replacing a basic doorbell and do not want to plan the purchase around a permanent wired connection. Confirm the exact power arrangement in the live listing before ordering.
When the doorbell wire is ready
The wired S330 makes more sense when the entrance already has a compatible wired connection and you prefer a fixed installation with an included chime. The lower price is useful only if the wiring does not create an extra project.
When the entrance is exposed
Measure the mounting area and check the view from the camera position. A dual-camera specification cannot fix a blocked sightline, a poor mounting angle, or a weak network path.
When you expect local storage
Read the current bundle and storage requirements carefully. Chimes, mounting hardware, storage options, and service terms can differ between listings even when the product name looks similar.
E340 vs wired S330: what actually changes
| Decision point | eufy Video Doorbell E340 | eufy Video Doorbell Wired S330 |
|---|---|---|
| Current checked offer | $149.99, 4.0/5 | $109.99, 4.0/5 |
| Camera approach | Dual-camera doorbell design for the visitor and lower entrance area. | Dual-camera wired doorbell design with Delivery Guard positioning. |
| Power assumption | More flexible for entrances where a permanent wired setup is not the starting point; confirm the current listing details. | Requires a compatible wired doorbell connection and is built around a fixed installation. |
| Included routine | Choose it when placement flexibility is worth the extra purchase cost. | Includes a chime in the checked product name and favors a settled, always-connected entrance. |
| Best buyer | Renters, replacements, or households avoiding new wiring work. | Homeowners with existing wiring who want a lower-cost fixed setup. |
| Verify before purchase | Power method, mounting clearance, network reach, storage, and return terms. | Voltage compatibility, existing chime wiring, mounting position, storage, and return terms. |
Why the power decision comes first
A doorbell camera is installed at the least convenient place to improvise. If your entrance already has a compatible wired connection, the S330 can be a clean upgrade: the wiring is already part of the house, and the included chime makes the indoor alert routine easier to understand. The price difference is meaningful when installation is genuinely simple.
If the wiring is missing, inaccessible, or not compatible, the cheaper S330 can stop being the cheaper purchase. You may need an electrician, a different mounting plan, or a return. In that situation, the E340 deserves the first look because the purchase is less dependent on a pre-existing doorbell circuit. Confirm the current power and mounting requirements from the live listing, since bundles and regional specifications can change.
Which one is better for deliveries?
Both products are aimed at the entrance problem where a single forward-facing view is not enough. The useful question is not whether a second camera sounds impressive; it is whether the lower view actually covers the parcel drop area from your chosen mounting height. Sketch the field of view on the wall, check the doorstep position, and consider whether a porch roof, railing, or nearby wall will block part of the frame.
The wired S330’s Delivery Guard language makes it the more obvious shortlist option for a fixed delivery-focused entrance, while the E340 is attractive when the same dual-camera idea needs to fit a less predictable installation. Neither product can replace a clear mounting position and a reliable Wi-Fi path.
What I would check before ordering
- Confirm the power path. If you are considering the wired S330, identify the existing doorbell transformer and verify compatibility before treating the lower price as a saving.
- Measure the mounting surface. Include the trim, corner clearance, viewing angle, and the space needed to remove the unit later.
- Map the delivery zone. The lower camera is useful only if the parcel area is visible from the final mounting height.
- Check storage and alerts. Read the live listing for local storage, subscription language, chime details, and notification features in the exact bundle.
- Compare the return terms. A camera that cannot see the entrance clearly is a fit problem, so keep the return window in mind while testing the position.
Read the individual reviews
Read the eufy Video Doorbell E340 review for a closer look at the dual-camera design, power assumptions, and fit checks.
Read the eufy Video Doorbell Wired S330 review for the fixed-installation case, Delivery Guard positioning, and chime considerations.
Final verdict
The E340 is the safer recommendation for a buyer who values installation flexibility and does not want a new doorbell circuit to decide the project. The wired S330 is the better value when the entrance already has compatible wiring and the included chime matches how you want to receive alerts. Start with the power path, then judge the camera view and bundle. Comparing price before those checks is how a seemingly cheaper doorbell becomes the more expensive choice.
Check the eufy Video Doorbell E340 on Amazon → Check the wired S330 on Amazon →
FAQ
Is the E340 or wired S330 better for a new installation?
The E340 is the safer starting point when you do not already have a compatible wired doorbell circuit. The wired S330 is the better value when the existing wiring is ready and its fixed installation suits the entrance.
Do both doorbells cover the delivery area?
Both use a dual-camera approach, but the lower view depends on mounting height and the doorstep layout. Mark the parcel area on the wall before choosing either model.
What should I check before buying a wired doorbell?
Confirm transformer compatibility, wiring condition, mounting clearance, chime details, network coverage, storage terms, and the exact return policy in the live listing.
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Update note: Offer price, rating, availability, and product naming were checked from the current US listings on September 21, 2026. They can change after publication.
