SONOFF S31 (US): what it works with
SONOFF · model S31 · sold in US
The SONOFF S31 is set up in the eWeLink app, and that account is the bridge to everything else: Alexa, Google Home and SmartThings all connect through the eWeLink cloud. The reason to buy one is metering, with real-time current, voltage and power plus usage history, on a US plug rated 15 A / 1800 W over 2.4 GHz Wi-Fi. SONOFF doesn't list Apple Home, and Home Assistant gets on/off only through eWeLink's add-on.
Checked against 9 sources on
Ecosystem compatibility
| Platform | Works? | Details |
|---|---|---|
| Matter | Unconfirmed | No Matter certification found for the S31 itself. eWeLink's CUBE (iHost) Matter Bridge page lists the S31 among devices it can expose to Matter platforms.[6] |
| Apple Home | Unconfirmed | SONOFF lists Alexa, Google and IFTTT for the S31 but no Apple Home; Matter status is unconfirmed, so not marked as no. |
| Google Home | Yes | Through eWeLink account linking (cloud).[1],[2] |
| Amazon Alexa | Yes | Through the eWeLink skill (cloud).[1],[2] |
| SmartThings | Yes | Added in eWeLink first, then synced to SmartThings via cloud account linking.[3],[4],[5] |
| Home Assistant | Yes | Via eWeLink's own Home Assistant add-on (HA OS/Supervised), not a core HA integration. It covers eWeLink switches and sockets as on/off entities; power readings are not exposed.[7],[8],[9] |
“Via Matter” means you add it with that platform's Matter controller instead of a brand skill or app. “Unconfirmed” means we couldn't find an official source either way. How we verify.
Specs that matter for setup
- Hub required
- No[1]
- Local control
- Unconfirmed
- Radio: 2.4 GHz Wi-Fi 802.11 b/g/n.
- Hub: Wi-Fi plug that connects directly to the router; the Zigbee S31 Lite zb is a different product that needs a bridge.
- Local control: Not confirmed: SONOFF's S31 help page describes eWeLink LAN control generally without stating S31 support, and an ITEAD spec listing says LAN control: no.
- Energy monitoring: Real-time current, voltage and power, plus stored usage history. The S31 Lite has no metering.
- Max load: 15 A at 120 V AC.
Before you buy
- 2.4 GHz Wi-Fi only.
- Alexa, Google Home and SmartThings all go through the eWeLink cloud, and local control isn't confirmed.
- Home Assistant support is eWeLink's add-on (HA OS or Supervised only), not a core integration, and it gives on/off with no power readings.
- SONOFF doesn't list Apple Home; eWeLink's CUBE (iHost) Matter Bridge can expose the S31 to Matter platforms, but that's an extra device.
- Don't confuse it with the S31 Lite (no metering) or the S31 Lite zb (Zigbee, needs a bridge).
Quick answers
- Does the SONOFF S31 (US) work with Apple Home?
- Not confirmed. We couldn't find an official source either way. SONOFF lists Alexa, Google and IFTTT for the S31 but no Apple Home; Matter status is unconfirmed, so not marked as no.
- Does the SONOFF S31 (US) work with Google Home?
- Yes. The SONOFF S31 (US) works with Google Home directly. Through eWeLink account linking (cloud). More plugs for Google Home
- Does the SONOFF S31 (US) work with Amazon Alexa?
- Yes. The SONOFF S31 (US) works with Amazon Alexa directly. Through the eWeLink skill (cloud). More plugs for Amazon Alexa
- Does the SONOFF S31 (US) work with SmartThings?
- Yes. The SONOFF S31 (US) works with SmartThings directly. Added in eWeLink first, then synced to SmartThings via cloud account linking. More plugs for SmartThings
- Does the SONOFF S31 (US) work with Home Assistant?
- Yes. The SONOFF S31 (US) works with Home Assistant directly. Via eWeLink's own Home Assistant add-on (HA OS/Supervised), not a core HA integration. It covers eWeLink switches and sockets as on/off entities; power readings are not exposed. More plugs for Home Assistant
Sources
- SONOFF S31/S31 LITE — SONOFF (ITEAD) manufacturer · accessed Oct 10, 2026
- SONOFF S31/S31 LITE — ITEAD manufacturer · accessed Oct 10, 2026
- S31 — SONOFF Help Center manufacturer · accessed Oct 10, 2026
- SONOFF Smart Home Devices Now Interoperate More Easily With Samsung SmartThings — SONOFF (ITEAD) manufacturer · accessed Oct 10, 2026
- SmartThings Compatible Products via account linking — eWeLink (CoolKit) manufacturer · accessed Oct 10, 2026
- Matter Bridge - eWeLink — eWeLink (CoolKit) manufacturer · accessed Oct 10, 2026
- It's official. eWeLink Home Assistant Add-on arrives. - eWeLink — eWeLink (CoolKit) manufacturer · accessed Oct 10, 2026
- eWeLink connect to Home Assistant - eWeLink — eWeLink (CoolKit) manufacturer · accessed Oct 10, 2026
- How SONOFF Works with Home Assistant - SONOFF Official — SONOFF (ITEAD) manufacturer · accessed Oct 10, 2026
Official product page: sonoff.tech