Skip to main content
mattercatalog
LinkindLighting

Linkind A21 Smart Bulb Color Changing

Matter support claimed · certification unverified

Matter certified: Not verified. Matter support is claimed, but we hold no CSA certificate for this exact model. Sold in the US at Linkind. Certificate data: CSA ledger read .

Matter support is claimed, but no CSA certificate is verified for this exact model. Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.

At a glance: Matter certified: Not verified (Matter support claimed) · Connectivity: Wi-Fi · Thread border router: Not needed (uses Wi-Fi)

Works with
Apple Home, Amazon Alexa, Google Home and Samsung SmartThings (named by the maker)
CSA certificate
No CSA certificate on file
Network & hub
Wi-Fi; needs no Thread border router, only your platform’s Matter controller

Updated : the last change to this page’s certification, platform or store facts.

Independent guide. These are direct, non-affiliate links; we do not earn a commission from them. How our links work

Linkind A21 Smart Bulb Color Changing
Price at retailer

Linkind

Where to buy

1 store

StorePriceDetailsStore link

Linkind

2-pack

See price at Linkind
Direct, non-affiliate linkNotes

Direct link to Linkind's product page. Confirm the exact variant, current price and delivery at the retailer.

Check price at Linkind

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.

Matter support claimed · certification unverified

Certification: not matched to a CSA certificate.

The Linkind A21 is a colour-changing Matter smart bulb with a standard E26 base that connects over 2.4GHz Wi-Fi. Linkind lists 1600 lumens (100W equivalent) at 14W, 16 million colours and tunable white from 1800K to 6500K. A21 bulbs are larger than A19, so check fixture clearance, and Linkind says not to use it with a traditional wall dimmer.

Source: Linkind's product page, read Oct 31, 2026.

Wi-FiMatter

Specifications

Brand
Linkind
Category
Lighting
Protocols
Wi-Fi, Matter

Ecosystem compatibility

Apple Home
Alexa
Google Home
SmartThings

Quick answers

Is the Linkind A21 Smart Bulb Color Changing Matter certified?
Not verified. Matter support is claimed for it, but MatterCatalog has not verified a CSA certificate for this exact model.
Which smart home platforms does the Linkind A21 Smart Bulb Color Changing work with?
The maker’s own site names Apple Home, Amazon Alexa, Google Home and Samsung SmartThings. No CSA certificate is verified for this exact model, so confirm platform support with the maker.
Does the Linkind A21 Smart Bulb Color Changing 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.
Where can I buy the Linkind A21 Smart Bulb Color Changing?
MatterCatalog has verified store links for it at Linkind. Check the current price, model and pack size at the store.

From this product’s catalog record, not hands-on testing. Editorial policy

Share:

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.

All 473 Matter lights sold in the US →All Linkind Matter devices →

Other Matter lights in the catalog

Each with its Matter network, certificate status and US store status.

Stay updated

Get notified when new Matter-certified devices launch.

No spam. Unsubscribe anytime.

Linkind A21

Certification unverified · 2-pack · Non-affiliate link

Check price at Linkind