Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack
This light is Matter certified (certificate CSA252C2MAT45588-24, certified May 21, 2025). It uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller. A certified Matter device can be added to any Matter controller whose app supports its device type, such as Apple Home, Google Home, Alexa, SmartThings or Home Assistant; features vary by app. The maker hasn’t named platforms on a page we hold. Sold in the US at Amazon, Linkind and AiDot.
Certificate data as of . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA252C2MAT45588-24). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, May 21, 2025 · Connectivity: Wi-Fi · Platforms: Samsung SmartThings (listed in its catalog record, unverified) · Thread border router: Not needed (uses Wi-Fi)
- Works with
- Matter certified as an extended color light, so it can work with Matter apps such as Apple Home, Google Home, Alexa and SmartThings when the app supports its device type; supported features vary by app. The maker hasn’t named platforms on a page we hold.
- CSA certificate
- CSA252C2MAT45588-24, certified May 21, 2025
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
Independent guide. We may earn a commission through affiliate links. Direct non-affiliate links are labeled. How our links work
Amazon
Compare prices
3 stores
Linkind
2-pack
Direct, non-affiliate linkNotes
Linkind's 2-pack. The same page also sells 4-, 8- and 12-packs; confirm the pack, current price and delivery at Linkind.
AiDot
2-pack
Direct, non-affiliate linkNotes
AiDot (Linkind's parent company) opens on the 2-pack; the same page also sells a 4-pack. Confirm the pack, current price and delivery at AiDot.
These are different packages and selections, not like-for-like prices. Check condition, pack quantity, included accessories and model before buying. Prices and availability are confirmed at each retailer.
CSA Matter Certified
Certificate: CSA252C2MAT45588-24Matter 1.4 certificate
Its certificate, CSA252C2MAT45588-24, is for Matter 1.4, certified May 21, 2025. The Matter version is the specification version on the certificate's ledger record.
Source: CSA Distributed Compliance Ledger, read Oct 19, 2026.
What Matter 1.4 added, and which devices use it →Certified software versions
The CSA ledger lists 2 certified software versions for the device on certificate CSA252C2MAT45588-24. The most recent is software 3.00.00, certified May 21, 2025, for Matter 1.4. That is the certificate this page shows.
- Software 3.00.00 · certified May 21, 2025 · Matter 1.4 · CSA252C2MAT45588-24 · this page's certificate
- Software V2.00.00 · certified Nov 9, 2022 · Matter 1.0 · CSA23184MAT40697-24
Certification covers each software version listed. It does not establish the software on a unit you buy.
Source: CSA Distributed Compliance Ledger, device record (vendor ID 4456, product ID 1013), read Oct 26, 2026.
Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack is a smart light; it is CSA Matter certified on May 21, 2025 (certificate CSA252C2MAT45588-24).
Specifications
- Brand
- Linkind
- Category
- Lighting
- Protocols
- Wi-Fi, Matter
- Certificate ID
- CSA252C2MAT45588-24
- Certified
- May 21, 2025
- Firmware
- 3.00.00
Ecosystem compatibility
Unverified: listed in its catalog record, not confirmed by the maker; check exact controller support.
Quick answers
- Is this light Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA252C2MAT45588-24, certified May 21, 2025.
- Does this light work with Apple Home or HomeKit?
- Likely. It is Matter certified (certificate CSA252C2MAT45588-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Apple Home on a page we hold. Apple says an iPhone using iOS 18 or later can add Matter accessories to the Home app without a home hub. Apple’s Matter page lists lights among the accessory types the Home app supports.
- Does this light work with Google Home?
- Likely. It is Matter certified (certificate CSA252C2MAT45588-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Google Home on a page we hold. Google says you need a Matter-enabled hub device set up on your home wireless network before you can add Matter devices to Google Home. Google’s supported-device-types page lists the Extended Color Light type.
- Does this light work with Alexa?
- Likely. It is Matter certified (certificate CSA252C2MAT45588-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Alexa on a page we hold. Alexa needs a Matter-compatible Echo; Amazon says its Echo devices support “a subset of Matter 1.5 and lower device types”, so check that yours does.
- Does this light work with Samsung SmartThings?
- Likely. It is Matter certified (certificate CSA252C2MAT45588-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named SmartThings on a page we hold. SmartThings adds Matter devices through the SmartThings app and a Matter controller.
- Does this light work with Home Assistant?
- Likely. It is Matter certified (certificate CSA252C2MAT45588-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Home Assistant on a page we hold. Home Assistant says: “Adding a new Matter device only works in the Home Assistant Companion app.”
- Does this light use Thread or Wi-Fi?
- Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
- Does this light need a hub or a Thread border router?
- No hub of its own and no Thread border router: it joins your Wi-Fi network. You still need your platform’s Matter controller (a smart speaker, display, streaming box or hub), though Apple says an iPhone using iOS 18 or later can add Matter accessories without a home hub.
- When was this light Matter certified?
- The CSA certified it on May 21, 2025 (certificate CSA252C2MAT45588-24). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Where can I buy this light?
- MatterCatalog has verified store links for it at Amazon, Linkind and AiDot. Check the current price, model and pack size at the store.
From this product’s catalog record, not hands-on testing. Editorial policy
Best Matter Smart Lights 2026
Buying guide to Matter smart bulbs, strips, and fixtures, compared from specifications and certification records.
Read the full buying guide →
More Matter lights
Each has a US store link. Models on the same Matter network with a CSA certificate on file come first.
- Govee Christmas Tree LightsWi-Fi · CSA certificate on file
- Govee Star Light Projector (H6093)Wi-Fi · CSA certificate on file
- LIFX Path (Square)Wi-Fi · CSA certificate on file
- LIFX Color PAR38Wi-Fi · CSA certificate on file
- Cync Full Color BulbWi-Fi · CSA certificate on file
- Razer Aether Light StripWi-Fi · CSA certificate on file
Cheapest Matter Smart Light Bulbs right now →All 453 Matter lights sold in the US →All Linkind Matter devices →
Same CSA certificate, other catalog pages
These pages list a record with the same CSA certificate, CSA252C2MAT45588-24. Check the pack size and finish on each page.
- Linkind Smart Bulb A21 1600LM 100W Equivalent (4-Pack)Wi-Fi · CSA certificate on file · US store link
For publishers: link to this certificate
Writing about the Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack? Show your readers where to see its CSA Matter certificate, CSA252C2MAT45588-24, certified May 21, 2025. Paste one of these into your page. It is free and optional, with no sign-up. The link goes to this page, which states the certificate and its source.
Text link
Works anywhere HTML works, including a blog post.
<a href="https://mattercatalog.com/product/12597681301429922049">Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack: CSA Matter certificate CSA252C2MAT45588-24, see the certificate on MatterCatalog</a>Badge
A small image that links here.
<a href="https://mattercatalog.com/product/12597681301429922049"><img src="https://mattercatalog.com/badges/matter-certificate-badge.v1.svg" alt="Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack: CSA Matter certificate CSA252C2MAT45588-24, see the certificate on MatterCatalog" width="220" height="48"></a>Styled badge (script)
The same link, drawn as a badge by one small static file. The link stays in your page without the script.
<a class="mc-cert-badge" href="https://mattercatalog.com/product/12597681301429922049" data-cert="CSA252C2MAT45588-24" data-name="Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack">Linkind A21 Smart LED Bulb, 1600 lm, Color Changing, 2-Pack: CSA Matter certificate CSA252C2MAT45588-24, see the certificate on MatterCatalog</a>
<script async src="https://mattercatalog.com/badges/matter-certificate-badge.v1.js"></script>The badge says only that a CSA certificate is on the ledger for this product. It is not an endorsement by MatterCatalog or the CSA, and it does not change how we list or order products. About the badge, and how to remove it.
Stay updated
Get notified when new Matter-certified devices launch.
No spam. Unsubscribe anytime.
Linkind A21
CSA certified