Winner
Data from Amazon and official Refoss and Zemismart sites.
2026 verdict
Refoss EM01P wins the 2026 matchup against Zemismart SPM02, mainly on smart meter port, data & monitoring, and local control.
The comparison tilts its way because of smart meter port, data & monitoring, and local control, with its broader overall balance keeping it in front. Zemismart SPM02 still makes sense if price, metering, and breaker panel install are your priority, but most buyers should still lean toward Refoss EM01P. For the average buyer, Refoss EM01P is the safer choice.
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| Feature | Refoss EM01P | Zemismart SPM02 | Winner |
|---|---|---|---|
| Price | $69.99 | $42.60 | Zemismart SPM02 |
| Metering | Solar Net Metering | Three-Phase Support, Solar Net Metering | Zemismart SPM02 |
| Breaker Panel Install | NO | YES | Zemismart SPM02 |
| Smart Meter Port | YES | NO | Refoss EM01P |
| Data & Monitoring | Energy Cost Tracking, Data Export | Usage Alerts | Refoss EM01P |
| Local Control | Local API, MQTT, Local Web Interface | None | Refoss EM01P |
| Connectivity | 2.4 GHz WiFi | Zigbee | Tie |
| Integrations | Home Assistant | Home Assistant | Tie |
| Relay Output | NO | NO | Tie |
| Load Management | NO | NO | Tie |
Winner
16% OFF
$69.99
$82.99
- + Smart Meter Port: YES
- + Data & Monitoring: Energy Cost Tracking, Data Export
- + Local Control: Local API, MQTT, Local Web Interface
- - Price: $69.99 vs $42.60
- - Metering: Solar Net Metering vs Three-Phase Support, Solar Net Metering
40% OFF
$42.60
$70.99
- + Price: $42.60
- + Metering: Three-Phase Support, Solar Net Metering
- + Breaker Panel Install: YES
- - Smart Meter Port: NO vs YES
- - Data & Monitoring: Usage Alerts vs Energy Cost Tracking, Data Export
Frequently Asked Questions
Which is better overall: Refoss EM01P or Zemismart SPM02?
Refoss EM01P has the stronger overall profile in this comparison, especially for smart meter port, data & monitoring, and local control.
What is the biggest difference between Refoss EM01P and Zemismart SPM02?
Price is one of the clearest differences: Refoss EM01P lists $69.99, while Zemismart SPM02 lists $42.60.
Which one looks better on price?
Refoss EM01P is listed at $69.99, while Zemismart SPM02 is listed at $42.60. Zemismart SPM02 (better spec).
Who should buy Refoss EM01P?
Choose Refoss EM01P if your priority is smart meter port and data & monitoring and that matters more than price.
Who should buy Zemismart SPM02?
Choose Zemismart SPM02 if your priority is price and metering and that matters more than smart meter port.
Full comparison table
Compare all 23 Energy Monitors side by side
You are looking at two of them. The full table lines up all Energy Monitors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 23 Energy Monitors
- 46 specs compared
- 43 filters
SonoffMINI PM Matter Over WiFi Power Meter (Non-Switch)
$15.90
ShellyPro EM-50
$119.99
EmporiaVue 3
$199.99
ShellyEM Gen3
$69.99
Shelly3EM-63W Gen3
EmporiaVue 3 3-Phase
$209.99- Refoss
EM01P
16% OFF$82.99$69.99 
ShellyEM Gen4
SonoffPOWCT
$38.19
ShellyEM Mini Gen4
$24.99
RefossEM06P
ShellyPro 3EM v2
$154.99
ShellyPro 3EM 3CT63
$150.99
MerossEM16P
20% OFF$199.99$159.98
ShellyPro 3EM-400
$329.99
RefossEM16P
15% OFF$199.99$169.99
MerossEM06P
AeotecHome Energy Meter 8
$95.99
SonoffMINI PM Zigbee Power Meter (Non-Switch)
$15.90
EmporiaVue Utility Connect
$39.99
