Refoss EM16P vs Zemismart SPM01 comparison

Data from Amazon and official Refoss and Zemismart sites.

2026 verdict

Between Refoss EM16P and Zemismart SPM01, Refoss EM16P is the better overall pick in 2026, leading on metering, connectivity, and data & monitoring. Its clearest strengths are metering, connectivity, and data & monitoring, and it still looks stronger on local control and load management. Choose Zemismart SPM01 only if price and integrations matter more to you than the broader advantage from Refoss EM16P. That makes Refoss EM16P the clearer recommendation in 2026.

Winner

Refoss

Refoss EM16P

25% OFF

$179.99

$239.99

Buy on Amazon USA

Zemismart

Zemismart SPM01

40% OFF

$26.00

$43.33

Buy on Official Store

Feature	Refoss EM16P	Zemismart SPM01	Winner
Price	$179.99	$26.00	Zemismart SPM01
Metering	Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings	Solar Net Metering, Power Factor Readings	Refoss EM16P
Connectivity	2.4 GHz WiFi, Bluetooth	Zigbee	Refoss EM16P
Integrations	Home Assistant	Samsung SmartThings, Home Assistant	Zemismart SPM01
Data & Monitoring	Energy Cost Tracking, Data Export, Usage Alerts	None	Refoss EM16P
Local Control	Local API, MQTT, Local Web Interface	None	Refoss EM16P
Load Management	YES	NO	Refoss EM16P
Breaker Panel Install	YES	YES	Tie
Smart Meter Port	NO	NO	Tie
Relay Output	NO	NO	Tie

Winner

Refoss

Refoss EM16P

25% OFF

$179.99

$239.99

Buy on Amazon USA

+ Metering: Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings
+ Connectivity: 2.4 GHz WiFi, Bluetooth
+ Data & Monitoring: Energy Cost Tracking, Data Export, Usage Alerts
- Price: $179.99 vs $26.00
- Integrations: Home Assistant vs Samsung SmartThings, Home Assistant

Zemismart

Zemismart SPM01

40% OFF

$26.00

$43.33

Buy on Official Store

+ Price: $26.00
+ Integrations: Samsung SmartThings, Home Assistant
- Metering: Solar Net Metering, Power Factor Readings vs Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings
- Connectivity: Zigbee vs 2.4 GHz WiFi, Bluetooth

Frequently Asked Questions

Which is better overall: Refoss EM16P or Zemismart SPM01?

Refoss EM16P has the stronger overall profile in this comparison, especially for metering, connectivity, and data & monitoring.

What is the biggest difference between Refoss EM16P and Zemismart SPM01?

Price is one of the clearest differences: Refoss EM16P lists $179.99, while Zemismart SPM01 lists $26.00.

Which one looks better on price?

Refoss EM16P is listed at $179.99, while Zemismart SPM01 is listed at $26.00. Zemismart SPM01 (better spec).

Who should buy Refoss EM16P?

Choose Refoss EM16P if your priority is metering and connectivity and that matters more than price.

Who should buy Zemismart SPM01?

Choose Zemismart SPM01 if your priority is price and integrations and that matters more than metering.

More Energy Monitors

Top Energy Monitors to compare next

Compare smart energy monitors by monitored circuits, CT sensor ratings, accuracy, solar net metering, three-phase support, local API and integrations.

Compare Energy Monitors