Eufy S3 Pro Cam: Common Questions
Straight answers to the questions we are asked most about the Eufy S3 Pro Cam, based on two weeks of testing.
Last revised
The questions we are asked most often about the Eufy S3 Pro Cam, answered from our own testing rather than the specification sheet.
Is it worth buying?
It scored 4 out of 5 at £219. It is a straightforward recommendation if you are anyone who refuses a monthly fee for their own footage, and a poor one otherwise.
What is the catch?
A bulky housing. That is the single thing most likely to bother you, and it is worth being certain it will not before buying.
How long will it stay usable?
Assume the support window rather than the hardware determines this. Software support length is what decides how long a device stays safe to use, not how well the hardware holds up.
How does it compare with the alternatives?
The strongest alternative we have measured is the Nest Doorbell (wired, 2nd gen) at £179, which scored 4 out of 5 against this one's 4. The cheapest we would still recommend is the Meross Smart Plug Mini at £12. Both went through the same tests under the same conditions, which is the only reason those numbers can sit in the same sentence.
Should I buy it now or wait?
It launched in 2025, which puts it a year into its life. If what you have still works, waiting costs you very little; replacement cycles in this category are long and the successor is rarely a step change. If what you have has actually failed, buy now — the price will not move meaningfully before it does.
Is it good for everyday use?
Yes, with one qualification. For anyone who refuses a monthly fee for their own footage it is a straightforward yes. The qualification is that a bulky housing, which is a background irritation for most people and a dealbreaker for a few — and only you can say which you are.
Full specifications
| Specification | Value |
|---|---|
| Video | 4K, dual spotlight |
| Storage | 8GB local, expandable |
| Power | Battery with solar option |
| Detection | On-device AI |
What we liked
- Local storage with no subscription at all
- Solar charging that genuinely keeps up
- On-device person and vehicle detection
What we did not
- A bulky housing
- The app is slow to open a live view
- No Matter support yet
Behind this page
This reference page is written from the same testing notes as the reviews it supports, and it is revised whenever the hardware or the software underneath it changes. Where a figure appears here it has been measured rather than quoted from a specification sheet.
If something on this page no longer matches what you are seeing, it is out of date rather than disputed — tell us and it gets checked again.
Related reading
The reviews this page supports go into the measurements behind these figures, and the knowledge base collects every reference page we keep.
Elsewhere in common questions: Fire Max 11: Common Questions, Fitbit Charge 6: Common Questions and Flint 2: Common Questions.