Aqara Light Switch H2
Aqara · US · 2 buttons, 1 channel (WS-K02E) · Switches · Thread / Bluetooth
CSA record available
ThreadPrice at retailer
Check priceKASTASwitches
KASTA Relay
CSA Certified
The KASTA Relay is Matter certified (certificate CSA25G7XMAT49263-24, certified Dec 23, 2025). It uses Thread, so it needs a Thread border router as well as 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. This version is sold outside the US; we link no US store for it.
Certificate data: CSA ledger read . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA25G7XMAT49263-24). Uses Thread, so it needs a Thread border router as well as your platform’s Matter controller.
At a glance: Matter certified: Yes, Dec 23, 2025 · Connectivity: Thread, Bluetooth · Thread border router: Needed (uses Thread)
- Works with
- Matter certified as an on/off light on the CSA’s certification ledger and as a dimmer switch on the CSA’s product page, 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
- CSA25G7XMAT49263-24, certified Dec 23, 2025
- Network & hub
- Thread; needs a Thread border router as well as your platform’s Matter controller
Updated : the last change to this page’s certification, platform or store facts.
Not sold by a US store we can verify. Similar CSA-certified smart lights you can buy:
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Why these: we have no US store link we can verify for this exact model. Each is a different product, certified by the CSA as the same device type, on/off light, with a CSA certificate for its own model and a store link we checked. Models on the same network (Thread) come first; the order is not a ranking.
Sold outside the USAustralian version
Sold outside the US: we don't link a US store for this regional version.
Shop switches you can buy now →CSA Matter Certified
Certificate: CSA25G7XMAT49263-24Matter 1.4 certificate
Its certificate, CSA25G7XMAT49263-24, is for Matter 1.4, certified Dec 23, 2025. The Matter version is the specification version on the certificate's ledger record.
Source: CSA Distributed Compliance Ledger, read Nov 10, 2026.
What Matter 1.4 added, and which devices use it →KASTA Matter Push Button Switch Relay Mechanism
ThreadBluetooth
Specifications
- Brand
- KASTA
- Category
- Switches
- Protocols
- Thread, Bluetooth
- Certificate ID
- CSA25G7XMAT49263-24
- Certificate holder
- KASTA TECHNOLOGIES (AU) PTY LTD
- Certified
- Dec 23, 2025
- Firmware
- 3.0.0
Ecosystem compatibility
Matter
Quick answers
- Is the KASTA Relay Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA25G7XMAT49263-24, certified Dec 23, 2025.
- Does the KASTA Relay work with Apple Home or HomeKit?
- Likely. It is Matter certified (certificate CSA25G7XMAT49263-24), 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. A Thread accessory needs a Thread-enabled home hub such as an Apple TV 4K, HomePod (2nd generation) or HomePod mini, or a compatible third-party Thread border router. Apple’s Matter page lists switches among the accessory types the Home app supports.
- Does the KASTA Relay work with Google Home?
- Likely. It is Matter certified (certificate CSA25G7XMAT49263-24), 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. A Thread device needs a hub that is also a Thread border router: Google Home Speaker (2026), Nest Hub (2nd gen), Nest Hub Max, Nest Wifi Pro (Wi-Fi 6E) or Google TV Streamer (4K).
- Does the KASTA Relay work with Alexa?
- Likely. It is Matter certified (certificate CSA25G7XMAT49263-24), 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. A Thread device needs an Echo with a built-in Thread border router, such as the Echo (4th Gen) or Echo Hub.
- Does the KASTA Relay work with Samsung SmartThings?
- Likely. It is Matter certified (certificate CSA25G7XMAT49263-24), 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. Samsung says a Thread device needs a Matter controller that includes a Thread border router; the latest SmartThings Hub, SmartThings Station, Samsung TVs and Samsung Family Hub refrigerators have a Thread border router built in.
- Does the KASTA Relay work with Home Assistant?
- Likely. It is Matter certified (certificate CSA25G7XMAT49263-24), 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.” A Thread device needs a Thread border router, which Home Assistant describes as a network device that connects a Thread mesh network to other IP networks such as Ethernet or Wi-Fi.
- Does the KASTA Relay use Thread or Wi-Fi?
- Thread. Its catalog record lists Thread, and Matter devices that use Thread need a Thread border router in the home, in addition to your platform’s Matter controller.
- Does the KASTA Relay need a hub or a Thread border router?
- Yes: a Thread border router, in addition to your platform’s Matter controller. A Thread border router connects Thread devices to your home network; Apple TV 4K, HomePod mini, Nest Hub (2nd gen) and Echo (4th Gen) are examples, and each platform lists its own.
- When was the KASTA Relay Matter certified?
- The CSA certified it on Dec 23, 2025 (certificate CSA25G7XMAT49263-24). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Is the KASTA Relay sold in the US?
- MatterCatalog labels it as sold outside the US: Australian version. We don't link a US store for this regional version.
From this product’s catalog record, not hands-on testing. Editorial policy
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