Shelly Pro EM-50 vs Zemismart SPM01 comparison

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 data & monitoring. It wins the broader comparison through connectivity, integrations, and data & monitoring, while local control and relay output 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.

Winner

Shelly

Shelly Pro EM-50

$119.99

Buy on Amazon USA

Zemismart

Zemismart SPM01

40% OFF

$26.00

$43.33

Buy on Official Store

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, Home Assistant	Samsung SmartThings, Home Assistant	Shelly Pro EM-50
Data & Monitoring	Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts	None	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

Winner

Shelly

Shelly Pro EM-50

$119.99

Buy on Amazon USA

+ Connectivity: 2.4 GHz WiFi, Ethernet, Bluetooth, Other
+ Integrations: Google Home, Alexa, Home Assistant
+ Data & Monitoring: Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts
- Price: $119.99 vs $26.00

Zemismart

Zemismart SPM01

40% OFF

$26.00

$43.33

Buy on Official Store

+ Price: $26.00
- Connectivity: Zigbee vs 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- Integrations: Samsung SmartThings, Home Assistant vs Google Home, Alexa, 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 data & monitoring.

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.

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