Winner
Updated October 2026
Data from Amazon and official Shelly and Zemismart sites.
2026 verdict
In 2026, the recommendation leans toward Shelly Pro EM-50 over Zemismart SPM01, driven by connectivity, integrations, and local control.
It wins the broader comparison through connectivity, integrations, and local control, while relay output and load management help confirm the result. Pick Zemismart SPM01 only when price is the deciding factor for your setup. That is why Shelly Pro EM-50 wins the verdict here.
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| Feature | Shelly Pro EM-50 | Zemismart SPM01 | Winner |
|---|---|---|---|
| Price | $119.99 | $26.00 | Zemismart SPM01 |
| Connectivity | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | Zigbee | Shelly Pro EM-50 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Samsung SmartThings, Home Assistant | Shelly Pro EM-50 |
| Local Control | Local API, MQTT, Local Web Interface | None | Shelly Pro EM-50 |
| Relay Output | YES | NO | Shelly Pro EM-50 |
| Load Management | YES | NO | Shelly Pro EM-50 |
| Metering | Solar Net Metering, Power Factor Readings | Solar Net Metering, Power Factor Readings | Tie |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Data & Monitoring | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | None | Tie |
Winner
$119.99
- + Connectivity: 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- + Local Control: Local API, MQTT, Local Web Interface
- - Price: $119.99 vs $26.00
40% OFF
$26.00
$43.33
- + Price: $26.00
- - Connectivity: Zigbee vs 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- - Integrations: Samsung SmartThings, Home Assistant vs Google Home, Alexa, Samsung SmartThings, Home Assistant
Frequently Asked Questions
Which is better overall: Shelly Pro EM-50 or Zemismart SPM01?
Shelly Pro EM-50 has the stronger overall profile in this comparison, especially for connectivity, integrations, and local control.
What is the biggest difference between Shelly Pro EM-50 and Zemismart SPM01?
Price is one of the clearest differences: Shelly Pro EM-50 lists $119.99, while Zemismart SPM01 lists $26.00.
Which one looks better on price?
Shelly Pro EM-50 is listed at $119.99, while Zemismart SPM01 is listed at $26.00. Zemismart SPM01 (better spec).
Who should buy Shelly Pro EM-50?
Choose Shelly Pro EM-50 if your priority is connectivity and integrations and that matters more than price.
Who should buy Zemismart SPM01?
Choose Zemismart SPM01 if your priority is price and that matters more than connectivity.
Full comparison table
Compare all 25 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.
- 25 Energy Monitors
- 46 specs compared
- 43 filters
SonoffMINI PM Matter Over WiFi Power Meter (Non-Switch)
$15.90
NodOnZigbee Smart Energy Monitor
$61.27- Shelly
Pro EM-50
$119.99 
EmporiaVue 3
$199.99
ShellyEM Gen3
20% OFF
$69.99$55.99
Shelly3EM-63W Gen3
20% OFF$114.99$91.99
EmporiaVue 3 3-Phase
$209.99
ShellyEM Gen4
3% OFF€67.00€65.12
SonoffPOWCT
20% OFF$38.19$30.55
ShellyEM Mini Gen4
20% OFF$24.99$19.99
RefossEM06P
Unavailable
ShellyPro 3EM v2
$154.99
ShellyPro 3EM 3CT63
20% OFF$150.99$120.79
MerossEM16P
20% OFF$199.99$159.99
ShellyPro 3EM-400
20% OFF$329.99$263.99
RefossEM16P
24% OFF$199.99$151.98
MerossEM06P
€94.99
SonoffMINI PM Zigbee Power Meter (Non-Switch)
20% OFF$15.90$12.72
AeotecHome Energy Meter 8
15% OFF$95.99$81.59
RefossEM01P
Unavailable
CamerasShellyCamera
DisplaysShellyWall Display X1i
€188.90
DisplaysShellyWall Display XL
4.1(64)20% OFF$349.99$279.99
DisplaysShellyWall Display
4.4(434)€126.53
Door & Window SensorsShellyBLU Door/Window Outdoor ZB
Door & Window SensorsShellyBLU Door/Window ZB
4.5(40)Unavailable- Energy MonitorsShelly
3EM-63W Gen3
4.6(137)20% OFF$114.99$91.99 - Energy MonitorsShelly
EM Gen3
4.6(268)20% OFF$69.99$55.99 - Energy MonitorsShelly
EM Gen4
3% OFF€67.00€65.12 - Energy MonitorsShelly
EM Mini Gen4
4.5(135)20% OFF$24.99$19.99 - Energy MonitorsShelly
Pro 3EM 3CT63
4.4(347)20% OFF$150.99$120.79 - Energy MonitorsShelly
Pro 3EM-400
4.3(21)20% OFF$329.99$263.99 - Energy MonitorsShelly
Pro 3EM v2
4.5(78)$154.99 - Energy MonitorsShelly
Pro EM-50
4.6(952)$119.99 
Gas DetectorsShellyGAS (CNG)
4.2(45)14% OFF€64.99€55.84
Gas DetectorsShellyGAS (LPG)
LED BulbsShellyMulticolor Bulb E27 Gen3
4.2(29)€9.90
Motion SensorsShellyBLU Motion ZB
4.5(43)$26.99
Motion SensorsShellyBlu Motion
4.0(1,034)Last priceMay 1, 2026$25.99
Unavailable
PlugsShellyPlug M Gen3
4.5(791)€12.90
Energy MonitorsZemismartSDM01
50% OFF$165.22$82.61
Energy MonitorsZemismartSPM01
40% OFF$43.33$26.00
Energy MonitorsZemismartSPM02
40% OFF$70.99$42.60
Gas DetectorsZemismartZM-GA100 Zigbee Gas Detector
30% OFF$37.14$26.00
IR Remote ControlsZemismartZMCIR01 Matter WiFi IR Thermostat
50% OFF$69.90$34.95
Window CoveringsZemismartMT03B Matter Thread Curtain Motor
$170.00
Window CoveringsZemismartZM25WB WiFi Rechargeable Roller Shade Motor
40% OFF$103.33$62.00