โThe FamiLock S3 keeps the palm-vein scanner and 2K doorbell of the Max but skips the interior screen, landing as the better value of eufy's two palm-vein locks.โ
Is the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) worth it?
The Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) ($229.48) is recommended with a 8.2/10 consensus score across 4 expert reviews. Experts highlight palm-vein recognition reads over 50,000 data points and unlocks in 0.6 seconds at 99.9% accuracy, the same hard-to-spoof biometric as the s3 max for about 50 dollars less. and includes a 150-degree 2k hdr video doorbell and 16gb of local storage with no monthly fee, so you still see and record visitors.. tomsguide says: "The FamiLock S3 keeps the palm-vein scanner and 2K doorbell of the Max but skips..." Best for: Value buyers who want palm-vein entry plus a 2K doorbell without the interior screen, Households that prefer palm-vein privacy and check the camera feed on a phone.

Verified 27d ago
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Eufy FamiLock S3 (Palm-Vein + 2K Doorbell)
Security
SmartHomeExplorer proprietary rating
4 expert sources
The Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) earns a SHE Score of 6.7/10, driven by strong future-proofing (8.5/10) with room to improve in compatibility breadth (5/10). Based on 4 expert sources and SmartHomeExplorer compatibility analysis.
How we calculate the SHE Score โExpert Consensus: 8.2/10 across 4 sources
Updated this weekโThe FamiLock S3 keeps the palm-vein scanner and 2K doorbell of the Max but skips the interior screen, landing as the better value of eufy's two palm-vein locks.โ
Key Features
- โ Palm-vein recognition, 50,000+ data points, 0.6 seconds unlock at 99.9% accuracy
- โ 150-degree 2K HDR video doorbell, 16GB local storage, no monthly fee
- โ ANSI/BHMA Grade 1 weatherproof build
- โ Matter support: Apple Home, Google, Alexa, SmartThings
- โ Two rechargeable batteries, up to 5 months, plus 4 AAA backup
- โ Stores palm-vein data for up to 50 family members
Best For
What Experts Agree On
What Experts Love
- โ Palm-vein recognition reads over 50,000 data points and unlocks in 0.6 seconds at 99.9% accuracy, the same hard-to-spoof biometric as the S3 Max for about 50 dollars less.
- โ Includes a 150-degree 2K HDR video doorbell and 16GB of local storage with no monthly fee, so you still see and record visitors.
- โ ANSI/BHMA Grade 1 weatherproof build with Matter support across Apple Home, Google, Alexa, and SmartThings.
- โ Two rechargeable batteries last up to 5 months with 4 AAA backup cells, and palm data stores for up to 50 family members.
Common Criticisms
- โ Drops the S3 Max's 4-inch interior screen, so you check the doorbell feed on your phone instead of at the door.
- โ Like the S3 Max it unlocks by palm-vein, not face, so it is not a true walk-up face-recognition lock.
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What The Experts Say
โEufy's palm-vein reading is fast and forgery-resistant, and on the S3 it comes bundled with a capable 2K doorbell at a friendlier price.โ
Ready to buy the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell)?
Check Price on Amazon$229.48 ยท 4 expert sources ยท 8.2/10 consensus
Frequently Asked Questions
Is the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) worth it?
The Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) earns a 8.2/10 consensus score across 4 expert sources and is rated "Recommended". At $229.48, it is best for Value buyers who want palm-vein entry plus a 2K doorbell without the interior screen. tomsguide notes: "The FamiLock S3 keeps the palm-vein scanner and 2K doorbell of the Max but skips the interior screen, landing as the better value ..."
How much does the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) cost?
The Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) is priced at $229.48. With a 8.2/10 score from 4 expert reviews and a "Recommended" rating, that price represents fair value relative to the ~7.5/10 average for Security products. Prices shift often, so check the live figure before buying.
Who is the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) best for?
The Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) is best for Value buyers who want palm-vein entry plus a 2K doorbell without the interior screen, Households that prefer palm-vein privacy and check the camera feed on a phone. Experts rate it "Recommended" with a 8.2/10 consensus across 4 sources.
How does the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) compare to other Security options?
Among the Security products we have aggregated, the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) ranks above average with a 8.2/10 score. techradar adds: "Eufy's palm-vein reading is fast and forgery-resistant, and on the S3 it comes bundled with a capable 2K doorbell at a friendlier ..."
What smart home systems does the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) work with?
The Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) works with Amazon Alexa, Samsung SmartThings, Matter. Check the compatibility notes above for any hub dependencies or setup requirements before you buy.
Does the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) need a hub or a subscription?
No mandatory subscription โ the core features work without a monthly fee.
What are the best alternatives to the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell)?
If the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) ($229.48, 8.2/10) is not the right fit, the closest alternatives in Security are eufy-familock-s3-max, philips-palm-vein-2in1. Compare them on price, ecosystem support, and expert consensus to find your match.
What are the pros and cons of the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell)?
The main strengths of the Eufy FamiLock S3 (Palm-Vein + 2K Doorbell) are palm-vein recognition reads over 50,000 data points and unlocks in 0.6 seconds at 99.9% accuracy, the same hard-to-spoof biometric as the s3 max for about 50 dollars less. and includes a 150-degree 2k hdr video doorbell and 16gb of local storage with no monthly fee, so you still see and record visitors.. The most-cited downside is drops the s3 max's 4-inch interior screen, so you check the doorbell feed on your phone instead of at the door.. Overall, 4 expert sources rate it "Recommended" with a 8.2/10 consensus score.
Sources & Methodology
This review aggregates 4 independent expert reviews into a single consensus score. See how we build consensus scores and the SHE Score methodology.
Expert review sources cited on this page:
- tomsguide
- techradar
Affiliate disclosure: SmartHomeExplorer.com participates in the Amazon Associates program. We earn a commission from qualifying purchases at no extra cost to you. This consensus review is based on 4 independent expert reviews โ we did not test this product ourselves. Always verify current prices and availability before purchasing.

