SONOFF S31 (US) vs Kasa KP125M (US)
Smart plugs · For the US and Canada
- Both work with Google Home, Amazon Alexa, SmartThings and Home Assistant.
- The Kasa KP125M (US) works with Apple Home; for the SONOFF S31 (US) it isn't confirmed.
- They also differ on: Matter, radio and local control.
Side by side
| Fact | SONOFF S31 (US) | Kasa KP125M (US) |
|---|---|---|
| Matter | Unconfirmed[6] | Yes, over Wi-Fi[1],[2],[5] |
| Apple Home | Unconfirmed | Via Matter[1],[7] |
| Google Home | Yes[1],[2] | Via Matter[1],[7] |
| Amazon Alexa | Yes[1],[2] | Via Matter[2],[6] |
| SmartThings | Yes[3],[4],[5] | Via Matter[1],[7] |
| Home Assistant | Yes[7],[8],[9] | Yes[8],[9] |
| Radio | Wi-Fi[1],[3] | Wi-Fi, Bluetooth[2] |
| Hub required | No[1] | No[2],[3] |
| Local control | Unconfirmed | Yes[5] |
| Energy monitoring | Yes[1],[2] | Yes[1],[2],[3],[4] |
| Max load | 1,800 W[1],[3] | 1,800 W[2] |
A bar on the left marks the rows where they differ. Numbers in brackets lead to the source on each device's own page, which also has the notes and what to check before you buy. Checked against official sources; the older of the two records was verified on . How we verify.
Quick answers
- SONOFF S31 (US) or Kasa KP125M (US): which works with Apple Home?
- Confirmed only for the Kasa KP125M (US). The SONOFF S31 (US) isn't confirmed either way; the Kasa KP125M (US) works through Matter. More smart plugs for Apple Home
- SONOFF S31 (US) or Kasa KP125M (US): which works with Google Home?
- Both. The SONOFF S31 (US) works directly; the Kasa KP125M (US) works through Matter. More smart plugs for Google Home
- SONOFF S31 (US) or Kasa KP125M (US): which works with Amazon Alexa?
- Both. The SONOFF S31 (US) works directly; the Kasa KP125M (US) works through Matter. More smart plugs for Amazon Alexa
- SONOFF S31 (US) or Kasa KP125M (US): which works with SmartThings?
- Both. The SONOFF S31 (US) works directly; the Kasa KP125M (US) works through Matter. More smart plugs for SmartThings
- SONOFF S31 (US) or Kasa KP125M (US): which works with Home Assistant?
- Both work with Home Assistant directly. More smart plugs for Home Assistant
Full details and sources: SONOFF S31 (US) · Kasa KP125M (US)