Cync Decorative Full Color ST19 Smart Bulb (2-Pack)
The Cync Decorative Full Color ST19 Smart Bulb (2-Pack) is Matter certified (certificate CSA2505CMAT44974-24, certified Jan 26, 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 GE Lighting.
Certificate data as of . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA2505CMAT44974-24). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, Jan 26, 2025 · Connectivity: Wi-Fi, Bluetooth · 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
- CSA2505CMAT44974-24, certified Jan 26, 2025
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
- Model number
- CLEDST196CDGSMS
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GE Lighting
Where to buy
1 store
GE Lighting
Direct, non-affiliate linkNotes
Direct link to GE Lighting's product page. Confirm the exact variant, current price and delivery at the retailer.
Check the model, region and pack size at the retailer. Prices and availability are confirmed there.
CSA model/software record
Certificate: CSA2505CMAT44974-24Matter 1.3 certificate
Its certificate, CSA2505CMAT44974-24, is for Matter 1.3, certified Jan 26, 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 1.3 added, and which devices use it →Certified software versions
The CSA ledger lists 2 certified software versions for the device on certificate CSA2505CMAT44974-24. The most recent is software 1.03.190, certified Jan 26, 2025, for Matter 1.3. That is the certificate this page shows.
- Software 1.03.190 · certified Jan 26, 2025 · Matter 1.3 · CSA2505CMAT44974-24 · this page's certificate
- Software 1.01.170 · certified Jan 4, 2024 · Matter 1.1 · CSA24021MAT42708-24
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 4921, product ID 97), read Oct 26, 2026.
ST19 decorative LED smart bulbs with full color and tunable white, 500 lumens at 6.2 W, medium (E26) base; sold as a 2-pack. Connects directly over 2.4 GHz Wi-Fi with no hub.
Specifications
- Brand
- Cync
- Category
- Lighting
- Protocols
- Wi-Fi, Bluetooth, Matter
- Certificate ID
- CSA2505CMAT44974-24
- Certified
- Jan 26, 2025
- Certified model
- CLEDST196CDGSMS
- Certified software version
- 1.03.190
Certification covers the named model(s) and software version(s) listed. It does not verify firmware installed on a retail unit or current retail availability. View CSA model/software record
Ecosystem compatibility
Quick answers
- Is the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) Matter certified?
- Yes. CSA Matter certificate CSA2505CMAT44974-24 covers model CLEDST196CDGSMS with software 1.03.190. The certificate does not establish the firmware on a unit you buy.
- Does the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) work with Apple Home or HomeKit?
- Likely. It is Matter certified (certificate CSA2505CMAT44974-24), 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) work with Google Home?
- Likely. It is Matter certified (certificate CSA2505CMAT44974-24), 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) work with Alexa?
- Likely. It is Matter certified (certificate CSA2505CMAT44974-24), 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) work with Samsung SmartThings?
- Likely. It is Matter certified (certificate CSA2505CMAT44974-24), 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) work with Home Assistant?
- Likely. It is Matter certified (certificate CSA2505CMAT44974-24), 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) 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 the Cync Decorative Full Color ST19 Smart Bulb (2-Pack) Matter certified?
- The CSA certified it on Jan 26, 2025 (certificate CSA2505CMAT44974-24, software 1.03.190). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Where can I buy the Cync Decorative Full Color ST19 Smart Bulb (2-Pack)?
- MatterCatalog has verified store links for it at GE Lighting. Check the current price, model and pack size at the store.
From this product’s catalog record, not hands-on testing. Editorial policy
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Read the full buying guide →
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All 453 Matter lights sold in the US →All Cync Matter devices →
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Cync ST19
CSA model/software record · Non-affiliate link