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Cameras · Head to head

Eufy Cam S3 Pro vs Eufy SoloCam E42

Full Smart Cameras comparison in 2026

Updated October 2026
Data from Amazon and official Eufy site.
2026 verdict
Two Eufy solar outdoor cameras, and the Eufy Cam S3 Pro is the stronger all-rounder of the pair.
Eufy Cam S3 Pro
Winner
Eufy Cam S3 Pro
$219.99
Buy on Amazon USACheck price
It is the better reviewed, shoots 4K with HDR and MaxColor night vision, is IP67 against IP65, adds RTSP and a battery rated for 12 months against 90 days, and supports Apple HomeKit at 1080p. The Eufy SoloCam E42 answers with the lower price and a motorized head that pans a full 360 degrees with AI tracking of people and vehicles, plus a 4K sensor and an extendable edge mop-style reach into corners. Both are subscription-free with local storage. Pick the Eufy Cam S3 Pro for image quality and HomeKit, and the Eufy SoloCam E42 for the lower cost and the panning view.
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FeatureEufy Cam S3 ProEufy SoloCam E42Winner
Price$219.99$129.99Eufy SoloCam E42
Rating4.44.3Eufy Cam S3 Pro
Weather ResistanceIP67IP65Eufy Cam S3 Pro
Battery Life12 months90 daysEufy Cam S3 Pro
HDRYESNOEufy Cam S3 Pro
RTSPYESHomeBase S380 requiredEufy Cam S3 Pro
Warranty1 year1 yearTie
PoENONOTie
Solar ChargingYESYESTie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
StorageCloudMicroSD Card SlotTie
2K VideoYESYESTie

What the differences mean

Image quality

The Eufy Cam S3 Pro records 4K with HDR and MaxColor night vision. The Eufy SoloCam E42 records 4K too, but without HDR and with standard color night vision, so the S3 Pro is the one to pick when low-light detail matters.

Coverage

The Eufy SoloCam E42 pans a full 360 degrees and tilts 70 degrees with AI tracking, letting one unit follow movement around a yard. The Eufy Cam S3 Pro is fixed at a 135-degree diagonal view.

Weather rating and RTSP

The Eufy Cam S3 Pro is IP67 and supports RTSP, while the Eufy SoloCam E42 is IP65 and needs a HomeBase S380 to serve an RTSP stream.

Battery

The Eufy Cam S3 Pro is rated for 12 months per charge. The Eufy SoloCam E42 is rated for about 90 days, though both are kept topped up by their solar panels in good sun.

HomeKit

The Eufy Cam S3 Pro supports Apple HomeKit (at 1080p) as well as Alexa, Google Home and Home Assistant. The Eufy SoloCam E42 supports HomeKit directly too, but it needs a HomeBase S380 for face recognition, pet detection and hard-drive storage.

Which one to buy if

What owners say

Owners of both Eufy cameras praise the 4K picture and the solar panel that keeps the battery topped up in fair weather, and both groups value subscription-free local storage. Eufy Cam S3 Pro owners lead with the MaxColor night vision that makes night look close to daytime, fast live-view loading and accurate people, vehicle and pet detection, and they single out the included external solar panel. Their complaints are unreliable AI face recognition, an app that can lag opening events, and battery struggles in cold or shaded spots, with HomeKit limited to 1080p. Eufy SoloCam E42 owners describe quick mounting and setup and a solar panel that charges even in cloudy weather, along with automatic tracking and pan control, and their notes are motion clips that can end too soon, occasional missed detections and slow tracking, plus a weak microphone.

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 S3 Pro
  • Eufy SoloCam E42

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Frequently Asked Questions

Which is better overall: Eufy Cam S3 Pro or Eufy SoloCam E42?

The Eufy Cam S3 Pro for image quality and build: it is the better reviewed, shoots 4K with HDR and MaxColor night vision, is IP67 with RTSP, and lasts 12 months per charge. The Eufy SoloCam E42 is the better value when you want a 360-degree panning view with AI tracking at a lower price.

What is the biggest difference between the Eufy Cam S3 Pro and the Eufy SoloCam E42?

Fixed versus panning. The Eufy Cam S3 Pro watches one wide 135-degree area with the better low-light sensor, while the Eufy SoloCam E42 pans 360 degrees and follows movement, which is what lets one unit cover more of a yard.

Do the Eufy Cam S3 Pro and Eufy SoloCam E42 need a subscription?

No. Both store locally with no monthly fee, the Eufy Cam S3 Pro on a HomeBase and the Eufy SoloCam E42 on a microSD card up to 128GB. Neither offers cloud storage for these models.

Do these Eufy cameras work with Apple HomeKit?

Yes, both support Apple HomeKit as well as Alexa, Google Home and Home Assistant. On the Eufy Cam S3 Pro HomeKit runs at 1080p, and the smartest extras on the Eufy SoloCam E42 need a HomeBase S380.

Who should buy the Eufy Cam S3 Pro?

Buyers who want subscription-free 4K with the best color night vision, a durable IP67 build and direct RTSP, especially upgraders from Arlo or Ring.

Who should buy the Eufy SoloCam E42?

Anyone who wants a lower cost, subscription-free 4K camera that pans 360 degrees to follow people and vehicles around a yard or driveway.

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