Winner
Updated November 2026
Data from the official Eufy and Reolink sites.
2026 verdict
Which solar pan-tilt camera leaves fewer blind spots?
The Eufy Cam S4 takes it, thanks to a dual-lens design and local storage that needs no extra hub. It pairs a fixed 130 degree wide lens with a 46 degree telephoto that pans 355 degrees, records to 32GB built in plus microSD, streams over RTSP and works with Alexa, Google Home and Home Assistant directly. The Reolink Altas PT Ultra answers with dual-band Wi-Fi, a 2-year warranty against 1 year, a battery rated for 16 months and the lower price of the pair, but it has no Alexa support and needs a Reolink Home Hub for RTSP and Home Assistant. Both shoot 4K with color night vision and charge from the sun. Pick the Eufy Cam S4 for wide coverage and open integrations, and the Reolink Altas PT Ultra for a crowded 2.4 GHz network or the longer warranty.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Works with
Connectivity
- Wi-Fi 2.4/5 GHz
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| Feature | Eufy Cam S4 | Reolink Altas PT Ultra | Winner |
|---|---|---|---|
| Rating | 4.2 | 3.8 | Eufy Cam S4 |
| Warranty | 1 year | 2 years | Reolink Altas PT Ultra |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi, 5 GHz WiFi | Reolink Altas PT Ultra |
| Storage | Internal, MicroSD Card Slot, Cloud | MicroSD Card Slot, Cloud | Eufy Cam S4 |
| Multiple Lenses | Triple (fixed wide + dual-lens pan-tilt zoom) | NO | Eufy Cam S4 |
| RTSP | YES | Reolink Home Hub required | Eufy Cam S4 |
| Alerts | Motion, People, Animals, Vehicles, Familiar Faces | Motion, People, Animals, Vehicles | Eufy Cam S4 |
| Weather Resistance | IP65 | IP65 | Tie |
| PoE | NO | NO | Tie |
| Solar Charging | YES | YES | Tie |
| 2K Video | YES | YES | Tie |
| 4K Video | YES | YES | Tie |
What the differences mean
One lens or two
The Eufy Cam S4 keeps a fixed 130 degree wide view while a second 46 degree telephoto lens pans and zooms, so it can follow someone without losing the rest of the yard. The Reolink Altas PT Ultra has one 90 degree lens that turns 355 degrees and tilts 90, so while it tracks, it only sees where it points.
Wi-Fi band
The Reolink Altas PT Ultra connects on 2.4 or 5 GHz. The Eufy Cam S4 is 2.4 GHz only, which its owners notice in apartments and homes crowded with smart devices.
Storage and smart home access
The Eufy Cam S4 records to 32GB of built-in memory plus microSD and offers RTSP, Alexa and Home Assistant on its own. The Reolink Altas PT Ultra records to microSD, has no Alexa support and needs a Reolink Home Hub before RTSP or Home Assistant work.
Power options
The Reolink Altas PT Ultra is battery and solar only, with a battery rated for 16 months. The Eufy Cam S4 can also be wired to power, and wired it keeps a 24/7 video history, which is the more dependable route to continuous recording.
Warranty
Reolink covers the Reolink Altas PT Ultra for 2 years, Eufy covers the Eufy Cam S4 for 1 year.
Which one to buy if
- you want one camera to watch a wide yard and still zoom in on movement
The Eufy Cam S4 keeps its wide lens on the scene while the telephoto lens follows the action.
- your router is far away or the 2.4 GHz band is crowded
The Reolink Altas PT Ultra can join the 5 GHz band, which the Eufy Cam S4 cannot.
- your home runs on Alexa or Home Assistant and you want no extra hub
The Eufy Cam S4 works with both directly, while the Reolink needs its Home Hub for Home Assistant and has no Alexa support.
- a longer warranty and a lower price matter most
The Reolink Altas PT Ultra is the more affordable of the two and comes with 2 years of coverage.
Winner
$349.99
- + Rating: 4.2
- + Storage: Internal, MicroSD Card Slot, Cloud
- + Multiple Lenses: Triple (fixed wide + dual-lens pan-tilt zoom)
- - Warranty: 1 year vs 2 years
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, 5 GHz WiFi
- + Warranty: 2 years
- + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi
- - Rating: 3.8 vs 4.2
- - Storage: MicroSD Card Slot, Cloud vs Internal, MicroSD Card Slot, Cloud
What owners say
Owners of both cameras agree on the basics: sharp 4K footage, color night vision that holds up, solar charging that cuts down on recharging and no mandatory subscription. Eufy Cam S4 owners single out the dual-lens tracking, with one lens holding the wide view while the other zooms and follows movement, and they praise Eufy's customer service. Their complaints are about connections on busy 2.4 GHz networks, an app they call heavy and slow, and vehicle detection that misses on long driveways. Reolink Altas PT Ultra owners love the pre-recording that catches the start of an event, the metal mounts and quick support, but they warn that the bundled panel cannot keep up with round-the-clock recording and that the battery can stop working in long freezing spells.
Frequently Asked Questions
Which is better overall: Eufy Cam S4 or Reolink Altas PT Ultra?
The Eufy Cam S4. Its dual-lens design covers a wide scene while zooming on movement, it stores footage on 32GB built in plus microSD, and it works with Alexa, Google Home, Home Assistant and RTSP without a hub. The Reolink Altas PT Ultra is the more affordable choice with dual-band Wi-Fi and a 2-year warranty.
What is the biggest difference between the Eufy Cam S4 and the Reolink Altas PT Ultra?
The lenses. The Eufy Cam S4 combines a fixed 130 degree wide lens with a pan-tilt telephoto lens, while the Reolink Altas PT Ultra uses a single 90 degree lens that pans 355 degrees and tilts 90 degrees.
Do the Eufy Cam S4 and the Reolink Altas PT Ultra need a subscription?
No. Both record locally without a plan: the Eufy Cam S4 to 32GB of built-in storage or microSD, the Reolink Altas PT Ultra to microSD. Cloud storage is an optional paid extra on both.
Which works with Alexa, the Eufy Cam S4 or the Reolink Altas PT Ultra?
The Eufy Cam S4 works with Alexa, Google Home and Home Assistant. The Reolink Altas PT Ultra works with Google Home, has no Alexa support and needs a Reolink Home Hub for Home Assistant.
Who should buy the Eufy Cam S4?
Owners of large yards or driveways who want wide coverage and tracking from one camera, local storage with no subscription and direct Alexa or Home Assistant support, and who have a solid 2.4 GHz signal where it will be mounted.
Who should buy the Reolink Altas PT Ultra?
Buyers who want a solar 4K pan-tilt camera for less, with dual-band Wi-Fi, a battery rated for 16 months and a 2-year warranty, and who are happy inside the Reolink app.
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