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frontpageneomatrixviper posted Jan 20, 2026 03:49 PM
frontpageneomatrixviper posted Jan 20, 2026 03:49 PM

Costco Members: 2-pk First Alert Z-Wave Battery Smoke & CO Alarm (Works w/ Ring)

+ Free Shipping

$75

$100

25% off
Costco Wholesale
66 Comments 15,337 Views
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Deal Details
Costco Wholesale has for its Members: 2-Pack First Alert Z-Wave Battery Smoke & CO Alarm on sale for $74.99. Shipping is free.

Thanks to community member neomatrixviper for finding this deal.

Features:
  • This device is certified to work with Ring; Requires Ring Alarm Base Station to Work with Ring. Enjoy improved compatibility, easier setup and a seamless in-app experience
  • Temperature Range: 40°F (4°C) to 100°F (38°C). Humidity Range: 10% to 95% relative humidity (RH)
  • Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected
  • Certified to work with smart home systems such as Ring Alarm Base Station, Samsung SmartThings, and Nexia Home Intelligence when connected to a Z-Wave Plus gateway hub (sold separately)
  • Help keep your family safe with this 10-year battery-powered smoke detector and carbon monoxide alarm
  • The Z-Wave Plus with Smart Start feature allows a faster and more intuitive connection of device to hub and on-boarding via QR code scan located on device
  • Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam
  • Includes an 85-decibel horn, single test/silence button, side access to a tamper-resistant battery door, and pins that lock the alarm to the mounting bracket

Editor's Notes

Written by StrawMan86 | Staff
  • If you don't have a Costco Warehouse Membership, you can sign-up here
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by neomatrixviper
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: 2-Pack First Alert Z-Wave Battery Smoke & CO Alarm on sale for $74.99. Shipping is free.

Thanks to community member neomatrixviper for finding this deal.

Features:
  • This device is certified to work with Ring; Requires Ring Alarm Base Station to Work with Ring. Enjoy improved compatibility, easier setup and a seamless in-app experience
  • Temperature Range: 40°F (4°C) to 100°F (38°C). Humidity Range: 10% to 95% relative humidity (RH)
  • Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected
  • Certified to work with smart home systems such as Ring Alarm Base Station, Samsung SmartThings, and Nexia Home Intelligence when connected to a Z-Wave Plus gateway hub (sold separately)
  • Help keep your family safe with this 10-year battery-powered smoke detector and carbon monoxide alarm
  • The Z-Wave Plus with Smart Start feature allows a faster and more intuitive connection of device to hub and on-boarding via QR code scan located on device
  • Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam
  • Includes an 85-decibel horn, single test/silence button, side access to a tamper-resistant battery door, and pins that lock the alarm to the mounting bracket

Editor's Notes

Written by StrawMan86 | Staff
  • If you don't have a Costco Warehouse Membership, you can sign-up here
  • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by neomatrixviper

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Top Comments

jmxi
272 Posts
128 Reputation
I have these and they work great with Home Assistant.
kevinuo
304 Posts
91 Reputation
Not sure if they're related but.. I did a small fact check :

As a product manufactured in Mexico, the First Alert Z-Wave Battery Smoke and CO Alarm (including models ZCOMBO-G and SMCO410) typically qualifies for duty-free treatment under the United States-Mexico-Canada Agreement (USMCA).

Not that I like tariff, it's just not everything is tariff problem Smilie
Rudedog7
620 Posts
219 Reputation
Don't want to poop poop on the deal, but you can make your current existing interconnected smoke detectors Z-wave smart. The Zooz Zen 55 can be wired into your existing interconnected smoke detectors and will send notifications for Smoke/Fire and CO. I used to have a different solution that used modules and open and closed switches, but switched to Zooz and it's been working great.

66 Comments

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Jan 20, 2026 03:57 PM
272 Posts
Joined May 2013
jmxiJan 20, 2026 03:57 PM
272 Posts

Our community has rated this post as helpful. If you agree, why not thank jmxi

I have these and they work great with Home Assistant.
7
Jan 20, 2026 04:00 PM
249 Posts
Joined Jun 2007
paulmike3Jan 20, 2026 04:00 PM
249 Posts
Same with SmartThings 👍🏻
Edit: Maybe not. ZCOMBO model works great with ST. These are the replacement (SMC0410) and may require the V3 ST hub.
Last edited by paulmike3 January 20, 2026 at 09:09 AM.
1
Jan 20, 2026 04:05 PM
608 Posts
Joined Apr 2017
irritableJan 20, 2026 04:05 PM
608 Posts
Pretty sure I got a three-pack for a Benjamin a couple of years ago, but those were different times.
Still flogging my old Vera, and they work with that. Have what I need for HA, but I keep procrastinating on that struggle ...
Jan 20, 2026 05:02 PM
52 Posts
Joined Feb 2017
ZirdumJan 20, 2026 05:02 PM
52 Posts
Based on this thread, it looks like it would work fine with HA: https://community.home-assistant....0/903536/3

The biggest difference between this 2 pack and the older 3 pack we'd see for about $100 in the past is that these have the 10 year battery built-in (which is nice as these units should not be used beyond their expiry anyhow).
Pro
Jan 20, 2026 05:11 PM
263 Posts
Joined Nov 2017
jdr123
Pro
Jan 20, 2026 05:11 PM
263 Posts

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Quote from irritable :
Pretty sure I got a three-pack for a Benjamin a couple of years ago, but those were different times.
Still flogging my old Vera, and they work with that. Have what I need for HA, but I keep procrastinating on that struggle ...
$80 for three in 2023:
https://slickdeals.net/f/16649084-costco-members-3-pack-first-alert-z-wave-smoke-and-carbon-monoxide-alarm-79-99?src=SDSearchv3&attrsrc=Thread%3AExpired%3ATrue%7CSearch%3AType%3Anormal%7CSearch%3ASort%3Arelevance%7CSearch%3AHideExpired%3Afalse
2
Jan 20, 2026 05:20 PM
1,937 Posts
Joined Feb 2007
techie333Jan 20, 2026 05:20 PM
1,937 Posts

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1
1
7
Jan 20, 2026 05:26 PM
64 Posts
Joined Sep 2015
strakaidoJan 20, 2026 05:26 PM
64 Posts

Our community has rated this post as helpful. If you agree, why not thank strakaido

To work with Smartthings, I had to upgrade my v2 hub with the v3 hub
1

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Jan 20, 2026 05:35 PM
200 Posts
Joined Aug 2011
Shizzle01Jan 20, 2026 05:35 PM
200 Posts
Got them for $26/ea back in Dec of 2017 😁. They finally gave up , so perfect timing!
1
Jan 20, 2026 05:35 PM
200 Posts
Joined Aug 2011
Shizzle01Jan 20, 2026 05:35 PM
200 Posts
Got them for $26/ea back in Dec of 2017 😁. They finally gave up. Was probably supposed to replace them years ago , so perfect timing!
Jan 20, 2026 05:36 PM
608 Posts
Joined Apr 2017
irritableJan 20, 2026 05:36 PM
608 Posts
Quote from Zirdum :
Based on this thread, it looks like it would work fine with HA: https://community.home-assistant....0/903536/3

The biggest difference between this 2 pack and the older 3 pack we'd see for about $100 in the past is that these have the 10 year battery built-in (which is nice as these units should not be used beyond their expiry anyhow).
Looks like they've extended the service life to ten years also, rather than the seven years before.
Jan 20, 2026 05:49 PM
81 Posts
Joined Aug 2016
travishauchJan 20, 2026 05:49 PM
81 Posts
Going to try these. My older version of these use two AA and last only about a year.
Jan 20, 2026 05:52 PM
620 Posts
Joined Nov 2017
Rudedog7Jan 20, 2026 05:52 PM
620 Posts

Our community has rated this post as helpful. If you agree, why not thank Rudedog7

Don't want to poop poop on the deal, but you can make your current existing interconnected smoke detectors Z-wave smart. The Zooz Zen 55 can be wired into your existing interconnected smoke detectors and will send notifications for Smoke/Fire and CO. I used to have a different solution that used modules and open and closed switches, but switched to Zooz and it's been working great.
3
Jan 20, 2026 05:53 PM
38 Posts
Joined Jan 2011
s_mlJan 20, 2026 05:53 PM
38 Posts
the first generation of these were finicky and needed a custom integration in HA. they are starting to go bad 7y later (they beep constantly, no amount of resetting will stop it, when they are EOL). been slowly replacing them with these newer ones that work out of the box. don't need any at the moment but may get a couple spares anyhow.
Jan 20, 2026 05:55 PM
1,728 Posts
Joined Aug 2011
drawzJan 20, 2026 05:55 PM
1,728 Posts
Can these be silenced from your phone? Do they communicate with each other? One of these days I'll have to replace my now discontinued Nest smoke/CO detectors.

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Jan 20, 2026 06:04 PM
532 Posts
Joined Mar 2007
qwopzxnmJan 20, 2026 06:04 PM
532 Posts

Our community has rated this post as helpful. If you agree, why not thank qwopzxnm

As others have mentioned, with SmartThings you need a V3 hub. I have a V2 and was pulling my hair out trying to get these to connect until finding out that they wouldn't work.
1

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