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| Feature | Eufy Cam S4 | Reolink OMVI 2i PoE | Winner |
|---|---|---|---|
| Price | $349.99 | $189.99 | Reolink OMVI 2i PoE |
| Rating | 4.2 | 5.0 | Reolink OMVI 2i PoE |
| Warranty | 1 year | 2 years | Reolink OMVI 2i PoE |
| Weather Resistance | IP65 | IP66 | Reolink OMVI 2i PoE |
| PoE | NO | YES | Reolink OMVI 2i PoE |
| Solar Charging | YES | NO | Eufy Cam S4 |
| Storage | Internal, MicroSD Card Slot, Cloud | MicroSD Card Slot | Eufy Cam S4 |
| 4K Video | YES | NO | Eufy Cam S4 |
| Alerts | Motion, People, Animals, Vehicles, Familiar Faces | Motion, People, Animals, Vehicles | Eufy Cam S4 |
| Connectivity | 2.4 GHz WiFi | Ethernet | Tie |
| 2K Video | YES | YES | Tie |
| Color Night Vision | YES | YES | Tie |
What the differences mean
Power
The Eufy Cam S4 runs on a rechargeable battery with solar charging, so it can mount far from any outlet. The Reolink OMVI 2i PoE needs a Power-over-Ethernet cable, which means a wired run but a connection that never depends on charge.
Resolution
The Eufy Cam S4 records 4K, keeping more detail for zooming into a face or a plate. The Reolink OMVI 2i PoE uses two 5MP lenses, clear across a wide scene but with less fine detail than 4K.
Tracking
Both cameras follow movement, but differently. The Eufy Cam S4 pairs a fixed wide lens with a pan-tilt zoom lens for up to 8x auto zoom, while the Reolink OMVI 2i PoE pans its lower lens up to 340 degrees with SyncTrack linking its two lenses.
Storage
The Eufy Cam S4 records to 32GB of built-in storage, a microSD card up to 256GB or a HomeBase. The Reolink OMVI 2i PoE records to a microSD card up to 512GB or a Reolink NVR, both without a mandatory subscription.
Build, warranty and price
The Reolink OMVI 2i PoE is IP66 rated with a two-year warranty and is the cheaper camera. The Eufy Cam S4 is IP65 with one year of cover and sits at a premium price for its dual-lens, solar design.
Familiar faces
The Eufy Cam S4 can recognize familiar faces, but only when it is paired with an Eufy HomeBase S380. The Reolink OMVI 2i PoE does not offer face recognition at all, so neither gives it out of the box.
Which one to buy if
- there is no power outlet near the mounting spot
The Eufy Cam S4 runs on a battery topped up by solar, so it can go where a cable cannot, unlike the wired Reolink OMVI 2i PoE.
- you can run one Ethernet cable
The Reolink OMVI 2i PoE draws power and data from a single PoE cable, giving the steadiest link and no battery to manage.
- you want the most detail to zoom into
The Eufy Cam S4 records 4K, while the Reolink OMVI 2i PoE tops out at 5MP, so the Eufy keeps more detail for distant subjects.
- you want the most affordable option of the two
The Reolink OMVI 2i PoE is the lower priced camera and still tracks movement and records 24/7 to local storage without a subscription.
- you want local recording with no wiring and no fee
The Eufy Cam S4 keeps footage on 32GB built in, a microSD card or a HomeBase with no mandatory subscription, and needs no cable to run.
- + Solar Charging: YES
- + Storage: Internal, MicroSD Card Slot, Cloud
- + 4K Video: YES
- - Price: $349.99 vs $189.99
- - Rating: 4.2 vs 5.0
- + Price: $189.99
- + Rating: 5.0
- + Warranty: 2 years
- - Solar Charging: NO vs YES
- - Storage: MicroSD Card Slot vs Internal, MicroSD Card Slot, Cloud
What owners say
Owners of the Eufy Cam S4 bought it for the tracking dual-lens setup, and that is what they praise: a fixed wide lens that holds the scene while a pan-tilt zoom lens follows people and pets, which they call the best in Eufy's range. The 4K image is described as sharp day and night, with reliable color night vision, and the free local storage on 32GB built in plus microSD or a HomeBase is a major draw. Solar charging keeps it running with little upkeep. The recurring issues are 2.4GHz-only Wi-Fi that can drop in busy networks, an app owners find heavy, and vehicle detection that is not always consistent.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Eufy Cam S4
- Reolink OMVI 2i PoE
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Frequently Asked Questions
Which is better overall: Eufy Cam S4 or Reolink OMVI 2i PoE?
The Reolink OMVI 2i PoE if you can run a cable: it is cheaper, tougher and reliably wired. The Eufy Cam S4 is the better camera where there is no power, thanks to its battery and solar charging, and it adds 4K detail on top of auto-tracking.
What is the biggest difference between the Eufy Cam S4 and the Reolink OMVI 2i PoE?
Power and resolution. The Eufy Cam S4 is a wire-free battery and solar camera that records 4K, while the Reolink OMVI 2i PoE is a wired Power-over-Ethernet camera limited to 5MP. Both track movement with a pan-tilt lens.
Do the Eufy Cam S4 and Reolink OMVI 2i PoE need a subscription?
No. Both record locally with no mandatory fee. The Eufy Cam S4 uses 32GB built in, a microSD card or a HomeBase, and the Reolink OMVI 2i PoE uses a microSD card up to 512GB or an NVR, each with only an optional cloud tier.
Which tracks movement better, the Eufy Cam S4 or the Reolink OMVI 2i PoE?
Both are built to. The Eufy Cam S4 pairs a fixed wide lens with a pan-tilt zoom lens for up to 8x auto zoom, while the Reolink OMVI 2i PoE pans its lower lens up to 340 degrees with SyncTrack. The Eufy adds more zoom at a higher price.
Who should buy the Reolink OMVI 2i PoE?
Buyers with a PoE switch who want one wired camera to cover a wide area and track movement, at a lower price and in a tougher IP66 body.
Who should buy the Eufy Cam S4?
Buyers who need a camera far from power and want 4K detail with a tracking zoom lens, local storage without a subscription, and solar charging to keep the battery topped up.
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