[AC] $279.99*: eufy FamiLock S3 Max 3-in-1 Wi-Fi Smart Door Lock at Amazon

EufyHome via Amazon [amazon.com] has eufy FamiLock S3 Max 3-in-1 Wi-Fi Smart Door Lock for $299.99 - $20.00 when you 'clip' the coupon on product page = $279.99.
Shipping is free.

Price
$120 lower (30% savings) than the list price of $399.99
$20 lower (7% savings) than the previous price of $299.99

Savings
Saving $20.00 (check and activate [amazon.com])

*Previous Frontpage Deal at $323 with 28 Deal Score and 32 comments.

Customer reviews
4.2⭐ / 390
2,000+ bought in past month

amazon.com/dp/B0DTHMFMKP [amazon.com]

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Price Intelligence

Model: eufy FamiLock S3 Max, Smart Lock with Palm Vein Recognition, Keyless Entry Door Lock for Front Door, 3-in-1 Wi-Fi Keypad Deadbolt+ 2K HDR Camera+ Doorbell, ANSI/BHMA Grade 1, Rear Lock Video Screen

Deal History

Sale Price

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$NaN

Today

Post Date	Sold By	Sale Price	Activity
11/20/25	Amazon	$280	0
10/30/25	Amazon	$300	1
10/07/25	Amazon	$300 popular	18
10/07/25	Amazon	$300	1
09/08/25	Amazon	$340	2
07/08/25	Amazon	$323 frontpage	33

Current Prices

Sort: Lowest to Highest | Last Updated 12/12/2025, 12:50 PM

Sold By	Sale Price
Amazon	$299.99
NewEgg	$399.99

4 Comments

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joshuaNH

Dec 10, 2025 11:33 PM

5,519 Posts

Joined Oct 2010

joshuaNHDec 10, 2025 11:33 PM

5,519 Posts

so i purchased the best smart lock by Eufy 3 years ago. And today the battery has failed... Eufy does not have any instock on their website and I have already purchased TWO knock offs that give me about 2.5 days of use when it is suppose to offer about 8 months of use.

From my experiance... buy the ones that use AA batteries.

1

FabC

Yesterday 03:25 AM

318 Posts

Joined Nov 2017

FabCYesterday 03:25 AM

318 Posts

What does AC mean

ZeroShadow

Yesterday 03:26 AM

36 Posts

Joined Sep 2013

ZeroShadowYesterday 03:26 AM

36 Posts

Quote from FabC

:

What does AC mean

After coupon.

noctshadow

Yesterday 04:19 AM

686 Posts

Joined Apr 2006

noctshadowYesterday 04:19 AM

686 Posts

The price is the same as BF/CM

Rating:	(4.2 out of 5 stars)
Reviews:	390 Amazon Reviews
Manufacturer:	eufy
Model Number:	E85V0
Product SKU:	B0DTHMFMKP
UPC:	194644232658
ASIN:	B0DTHMFMKP
Brand:	eufy Security
Item Dimensions LxWxH:	3.07 x 1.22 x 7.87 Inches
Item Weight:	2.2994213 pounds
Item model number:	E85V0
Manufacturer:	eufy

[AC] $279.99*: eufy FamiLock S3 Max 3-in-1 Wi-Fi Smart Door Lock at Amazon

$280

$400

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[AC] $279.99*: eufy FamiLock S3 Max 3-in-1 Wi-Fi Smart Door Lock at Amazon

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Deal History Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price". Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.

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