Winner
Data from Amazon and official Sonoff and Zemismart sites.
2026 verdict
SONOFF POWCT beats Zemismart SPM01 in 2026, with its clearest edge on integrations, data & monitoring, and relay output. It separates itself most clearly on integrations, data & monitoring, and relay output, while still looking better on load management. You should still consider Zemismart SPM01 if price and metering matter more than raw overall balance. That makes SONOFF POWCT the clearer recommendation in 2026.
| Feature | SONOFF POWCT | Zemismart SPM01 | Winner |
|---|---|---|---|
| Price | $38.19 | $26.00 | Zemismart SPM01 |
| Metering | Solar Net Metering | Solar Net Metering, Power Factor Readings | Zemismart SPM01 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant, IFTTT | Samsung SmartThings, Home Assistant | SONOFF POWCT |
| Data & Monitoring | Data Export, Usage Alerts | None | SONOFF POWCT |
| Relay Output | YES | NO | SONOFF POWCT |
| Load Management | YES | NO | SONOFF POWCT |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi | Zigbee | Tie |
Winner
$38.19
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant, IFTTT
- + Data & Monitoring: Data Export, Usage Alerts
- + Relay Output: YES
- - Price: $38.19 vs $26.00
- - Metering: Solar Net Metering vs Solar Net Metering, Power Factor Readings
40% OFF
$26.00
$43.33
- + Price: $26.00
- + Metering: Solar Net Metering, Power Factor Readings
- - Integrations: Samsung SmartThings, Home Assistant vs Google Home, Alexa, Samsung SmartThings, Home Assistant, IFTTT
- - Data & Monitoring: None vs Data Export, Usage Alerts
Frequently Asked Questions
Which is better overall: SONOFF POWCT or Zemismart SPM01?
SONOFF POWCT has the stronger overall profile in this comparison, especially for integrations, data & monitoring, and relay output.
What is the biggest difference between SONOFF POWCT and Zemismart SPM01?
Price is one of the clearest differences: SONOFF POWCT lists $38.19, while Zemismart SPM01 lists $26.00.
Which one looks better on price?
SONOFF POWCT is listed at $38.19, while Zemismart SPM01 is listed at $26.00. Zemismart SPM01 (better spec).
Who should buy SONOFF POWCT?
Choose SONOFF POWCT if your priority is integrations and data & monitoring and that matters more than price.
Who should buy Zemismart SPM01?
Choose Zemismart SPM01 if your priority is price and metering and that matters more than integrations.
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