The Smart Device Compare comparison

NodOn Zigbee Smart Energy Monitor vs Refoss EM01P

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between NodOn Zigbee Smart Energy Monitor and Refoss EM01P

A summary of selected recorded differences between these energy monitors. Check the full specification table below for details and conditions.

Feature differences among your selected devices

2.4 GHz Wi-Fi (connectivity): NodOn Zigbee Smart Energy Monitor — No (The 2.4 GHz radio is Zigbee (IEEE 802.15.4), not Wi-Fi); Refoss EM01P — Yes.
Data Export (data monitoring): NodOn Zigbee Smart Energy Monitor — No (Not a native NodOn feature. Exporting the readings is a function of the home automation platform.); Refoss EM01P — Yes (Daily, weekly and monthly reports for consumption and feed-in).
Energy Cost Tracking (data monitoring): NodOn Zigbee Smart Energy Monitor — No (Not a native NodOn feature. Any cost figure is calculated by the home automation platform from the readings.); Refoss EM01P — Yes.
Load Management (features): NodOn Zigbee Smart Energy Monitor — Yes (NodOn lists load shedding on overconsumption among the meter's uses, driven by its readings | The switching itself is done by the compatible gateway or home automation system, not by the meter, which has no relay); Refoss EM01P — No.

Specifications to check side by side

Zigbee (connectivity): NodOn Zigbee Smart Energy Monitor — Zigbee Hub required (Zigbee 3.0 certified, 2.4 GHz, maximum radio power +10 dBm, so it joins an existing Zigbee network and needs a compatible coordinator or gateway | NodOn lists Home Assistant, SmartThings, Jeedom and Zigbee2MQTT as compatible gateways for this model); Refoss EM01P — No.
Real Time Updates (data monitoring): NodOn Zigbee Smart Energy Monitor — Yes (NodOn advertises real-time monitoring of voltage, current, power and energy but publishes no reporting interval for this model); Refoss EM01P — 1 min (Minute-level real-time power data).
Power Supply (installation): NodOn Zigbee Smart Energy Monitor — Mains (110-240 V); Refoss EM01P — USB.

Information still to confirm

9 of 39 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
Check the full table and manufacturer documentation before ruling out a device.

These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.

Compare capabilities, compatibility and setup requirements.

Option 1 · NodOn

NodOn Zigbee Smart Energy Monitor

Last updated October 2026

View full device profile

Option 2 · Refoss

Refoss EM01P

Catalog update date not recorded

View full device profile

What the catalog tells us

Understand the tradeoffs.

These counts describe the available data, not a quality score. More features do not automatically make a better device.

15differences with recorded values for every device

9rows with missing or unspecified information

Your priorities, side by side

Focus on what changes.

Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.

Differences onlyMy priorities (0)

Showing 39 of 39 rows. “Not recorded” does not mean “No”.

Reading layout

Connectivity

2.4 GHz Wi-Fi

NodOn Zigbee Smart Energy Monitor: No
Catalog note
The 2.4 GHz radio is Zigbee (IEEE 802.15.4), not Wi-Fi
Refoss EM01P: Yes

5 GHz Wi-Fi

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: No

Bluetooth

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: Not recorded

Ethernet

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: No

Other

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: No

Thread

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: No

Z Wave

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: No

Zigbee

NodOn Zigbee Smart Energy Monitor: Zigbee Hub required
Catalog note
Zigbee 3.0 certified, 2.4 GHz, maximum radio power +10 dBm, so it joins an existing Zigbee network and needs a compatible coordinator or gateway | NodOn lists Home Assistant, SmartThings, Jeedom and Zigbee2MQTT as compatible gateways for this model
Refoss EM01P: No

Data Monitoring

Data Export

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not a native NodOn feature. Exporting the readings is a function of the home automation platform.
Refoss EM01P: Yes
Catalog note
Daily, weekly and monthly reports for consumption and feed-in

Data History

NodOn Zigbee Smart Energy Monitor: Not applicable / unspecified
Catalog note
The meter keeps no history of its own beyond its cumulative energy registers, and NodOn ships no app: retention is whatever the host gateway or Home Assistant keeps
Refoss EM01P: 5 years
Catalog note
Local storage plus free cloud, daily data kept up to 5 years

Energy Cost Tracking

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not a native NodOn feature. Any cost figure is calculated by the home automation platform from the readings.
Refoss EM01P: Yes

Real Time Updates

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
NodOn advertises real-time monitoring of voltage, current, power and energy but publishes no reporting interval for this model
Refoss EM01P: 1 min
Catalog note
Minute-level real-time power data

Time Of Use Rates

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not a native NodOn feature. Time-of-use pricing is a function of the home automation platform.
Refoss EM01P: No

Usage Alerts

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not a native NodOn feature. Usage alerts are built in the home automation platform from the readings.
Refoss EM01P: Not recorded

Features

Automations

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
Through the compatible Zigbee gateway or Home Assistant, not on the device itself
Refoss EM01P: Yes

Load Management

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
NodOn lists load shedding on overconsumption among the meter's uses, driven by its readings | The switching itself is done by the compatible gateway or home automation system, not by the meter, which has no relay
Refoss EM01P: No

Relay Output

NodOn Zigbee Smart Energy Monitor: No
Catalog note
No switching output: the meter measures only and has no relay to cut a load
Refoss EM01P: No

Installation

Breaker Panel Install

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
Installed in-line inside the electrical panel on an existing circuit, next to the upstream protection device
Refoss EM01P: No
Catalog note
Magnetic mount on the meter face, no wiring and no panel work

Din Rail Mount

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
One 17.8 mm wide DIN module that clips onto the standard 35 mm rail inside the switchboard
Refoss EM01P: No

Power Supply

NodOn Zigbee Smart Energy Monitor: Mains (110-240 V)
Refoss EM01P: USB

Smart Meter Port

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: Yes
Catalog note
Optical head for SML and IEC 62056 smart meters, some need a PIN from the utility

Integrations

Alexa

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not compatible with Amazon Alexa.
Refoss EM01P: No
Catalog note
Alexa has no energy meter device type and this meter has no relay to expose as a switch, so a skill has nothing to publish

Apple Home

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not compatible with Apple Home.
Refoss EM01P: No

Google Home

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Not compatible with Google Home.
Refoss EM01P: No

Home Assistant

NodOn Zigbee Smart Energy Monitor

Yes

Catalog note

Zigbee2MQTT supports this exact model, the SEM-4-1-00, and exposes power, voltage, current, AC frequency, power factor, apparent power and both consumed and produced energy | NodOn also lists Home Assistant among the compatible gateways for this model | Works with Home Assistant through ZHA and through Zigbee2MQTT.

Refoss EM01P

Yes

Manufacturer source

Home Assistant integration is documented.

Refoss EM01P manufacturer product page →

Source section: Product description
Model: Refoss EM01P
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

This optical reading head requires a compatible European smart meter; it is not a universal clamp meter.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Plug-and-play, no custom plugins required

Matter

NodOn Zigbee Smart Energy Monitor: No
Catalog note
The radio is Zigbee 3.0 only, with no Matter certification or Matter path documented for this model
Refoss EM01P: No

SmartThings

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
NodOn lists SmartThings among the compatible gateways for this model, so it pairs with a SmartThings hub as a standard Zigbee 3.0 device
Refoss EM01P: No

Local Control

Local Api

NodOn Zigbee Smart Energy Monitor

Catalog note

A Zigbee end device with no IP stack and no documented serial interface, so there is nothing on the module itself to call directly; the data path belongs to whichever gateway hosts it

Refoss EM01P

Yes

Manufacturer source

A local API is available.

Refoss EM01P manufacturer product page →

Source section: Product description
Model: Refoss EM01P
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

This optical reading head requires a compatible European smart meter; it is not a universal clamp meter.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Refoss Open API with JSON-RPC 2.0, works with the cloud switched off

Local Web Interface

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Nothing runs on the module itself: it is paired and configured from the Zigbee gateway, and it has only a status LED and a reset/pairing button
Refoss EM01P: Yes
Catalog note
Built-in web interface for configuration and live readings

Mqtt

NodOn Zigbee Smart Energy Monitor

Catalog note

No native MQTT, though Zigbee2MQTT republishes the readings

Refoss EM01P

Yes

Manufacturer source

MQTT is supported.

Refoss EM01P manufacturer product page →

Source section: Product description
Model: Refoss EM01P
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

This optical reading head requires a compatible European smart meter; it is not a universal clamp meter.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Metering

Accuracy

NodOn Zigbee Smart Energy Monitor

±1%

Manufacturer source

The stated energy-measurement tolerance is one percent.

NodOn Zigbee Smart Energy Monitor manufacturer product page →

Source section: SEM-4-1-00 features and technical data
Model: NodOn Zigbee Smart Energy Monitor
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Class 1.0 to IEC 61557-12, stated as a 1% tolerance, over a measurement range of 50 mA to 63 A and a base current of 10 A

Refoss EM01P

Not applicable / unspecified

Catalog note

Reads the utility meter's own registers, so accuracy is the meter's

Bidirectional Metering

NodOn Zigbee Smart Energy Monitor

Yes

Manufacturer source

Bidirectional measurement is specified.

NodOn Zigbee Smart Energy Monitor manufacturer product page →

Source section: SEM-4-1-00 features and technical data
Model: NodOn Zigbee Smart Energy Monitor
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Bidirectional measurement reports consumption and production separately, which is what makes solar self-consumption and export readable | Zigbee2MQTT exposes the consumed total as energy and the production side as produced_energy for this exact model

Refoss EM01P

Yes

Catalog note

Reports both consumption and feed-in registers

Branch Ct Rating

NodOn Zigbee Smart Energy Monitor: Not applicable / unspecified
Refoss EM01P: Not applicable / unspecified

Included Ct Sensors

NodOn Zigbee Smart Energy Monitor: Not applicable / unspecified
Catalog note
Inline measurement through the module's own terminals, with no current transformer involved
Refoss EM01P: Not applicable / unspecified
Catalog note
Optical reading head, no current transformers involved

Main Ct Rating

NodOn Zigbee Smart Energy Monitor: Not applicable / unspecified
Catalog note
Rated up to 63 A directly on the circuit, without a current transformer
Refoss EM01P: Not applicable / unspecified

Monitored Circuits

NodOn Zigbee Smart Energy Monitor

Manufacturer source

The meter monitors one circuit.

NodOn Zigbee Smart Energy Monitor manufacturer product page →

Source section: SEM-4-1-00 features and technical data
Model: NodOn Zigbee Smart Energy Monitor
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

One 1P+N circuit: the line is wired through the meter's own terminals and the neutral passes alongside, so it meters a single circuit up to 63 A

Refoss EM01P

Catalog note

Whole-house totals as reported by the utility meter, no per-circuit detail

Power Factor

NodOn Zigbee Smart Energy Monitor: Yes
Catalog note
Reports voltage, current, active power, apparent power, power factor and AC frequency alongside the energy totals | Zigbee2MQTT exposes power_factor, power_apparent and ac_frequency for this exact model
Refoss EM01P: No

Split Phase

NodOn Zigbee Smart Energy Monitor: No
Catalog note
Rated 110-240 V AC 50/60 Hz as a 1P+N single-phase meter, so a 120/240 V North American split-phase service with two hot legs is out of scope
Refoss EM01P: Not applicable / unspecified

Three Phase

NodOn Zigbee Smart Energy Monitor: No
Refoss EM01P: Not applicable / unspecified

Specifications for NodOn Zigbee Smart Energy Monitor versus Refoss EM01P
Specification	NodOn Zigbee Smart Energy Monitor	Refoss EM01P
Connectivity
2.4 GHz Wi-Fi	No Catalog note The 2.4 GHz radio is Zigbee (IEEE 802.15.4), not Wi-Fi	Yes
5 GHz Wi-Fi	No	No
Bluetooth	No	Not recorded
Ethernet	No	No
Other	No	No
Thread	No	No
Z Wave	No	No
Zigbee	Zigbee Hub required Catalog note Zigbee 3.0 certified, 2.4 GHz, maximum radio power +10 dBm, so it joins an existing Zigbee network and needs a compatible coordinator or gateway \| NodOn lists Home Assistant, SmartThings, Jeedom and Zigbee2MQTT as compatible gateways for this model	No
Data Monitoring
Data Export	No Catalog note Not a native NodOn feature. Exporting the readings is a function of the home automation platform.	Yes Catalog note Daily, weekly and monthly reports for consumption and feed-in
Data History	Not applicable / unspecified Catalog note The meter keeps no history of its own beyond its cumulative energy registers, and NodOn ships no app: retention is whatever the host gateway or Home Assistant keeps	5 years Catalog note Local storage plus free cloud, daily data kept up to 5 years
Energy Cost Tracking	No Catalog note Not a native NodOn feature. Any cost figure is calculated by the home automation platform from the readings.	Yes
Real Time Updates	Yes Catalog note NodOn advertises real-time monitoring of voltage, current, power and energy but publishes no reporting interval for this model	1 min Catalog note Minute-level real-time power data
Time Of Use Rates	No Catalog note Not a native NodOn feature. Time-of-use pricing is a function of the home automation platform.	No
Usage Alerts	No Catalog note Not a native NodOn feature. Usage alerts are built in the home automation platform from the readings.	Not recorded
Features
Automations	Yes Catalog note Through the compatible Zigbee gateway or Home Assistant, not on the device itself	Yes
Load Management	Yes Catalog note NodOn lists load shedding on overconsumption among the meter's uses, driven by its readings \| The switching itself is done by the compatible gateway or home automation system, not by the meter, which has no relay	No
Relay Output	No Catalog note No switching output: the meter measures only and has no relay to cut a load	No
Installation
Breaker Panel Install	Yes Catalog note Installed in-line inside the electrical panel on an existing circuit, next to the upstream protection device	No Catalog note Magnetic mount on the meter face, no wiring and no panel work
Din Rail Mount	Yes Catalog note One 17.8 mm wide DIN module that clips onto the standard 35 mm rail inside the switchboard	No
Power Supply	Mains (110-240 V)	USB
Smart Meter Port	No	Yes Catalog note Optical head for SML and IEC 62056 smart meters, some need a PIN from the utility
Integrations
Alexa	No Catalog note Not compatible with Amazon Alexa.	No Catalog note Alexa has no energy meter device type and this meter has no relay to expose as a switch, so a skill has nothing to publish
Apple Home	No Catalog note Not compatible with Apple Home.	No
Google Home	No Catalog note Not compatible with Google Home.	No
Home Assistant	Yes Catalog note Zigbee2MQTT supports this exact model, the SEM-4-1-00, and exposes power, voltage, current, AC frequency, power factor, apparent power and both consumed and produced energy \| NodOn also lists Home Assistant among the compatible gateways for this model \| Works with Home Assistant through ZHA and through Zigbee2MQTT.	Yes Manufacturer source Home Assistant integration is documented. Refoss EM01P manufacturer product page → Source section Product description Model Refoss EM01P Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 This optical reading head requires a compatible European smart meter; it is not a universal clamp meter. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Plug-and-play, no custom plugins required
Matter	No Catalog note The radio is Zigbee 3.0 only, with no Matter certification or Matter path documented for this model	No
SmartThings	Yes Catalog note NodOn lists SmartThings among the compatible gateways for this model, so it pairs with a SmartThings hub as a standard Zigbee 3.0 device	No
Local Control
Local Api	No Catalog note A Zigbee end device with no IP stack and no documented serial interface, so there is nothing on the module itself to call directly; the data path belongs to whichever gateway hosts it	Yes Manufacturer source A local API is available. Refoss EM01P manufacturer product page → Source section Product description Model Refoss EM01P Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 This optical reading head requires a compatible European smart meter; it is not a universal clamp meter. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Refoss Open API with JSON-RPC 2.0, works with the cloud switched off
Local Web Interface	No Catalog note Nothing runs on the module itself: it is paired and configured from the Zigbee gateway, and it has only a status LED and a reset/pairing button	Yes Catalog note Built-in web interface for configuration and live readings
Mqtt	No Catalog note No native MQTT, though Zigbee2MQTT republishes the readings	Yes Manufacturer source MQTT is supported. Refoss EM01P manufacturer product page → Source section Product description Model Refoss EM01P Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 This optical reading head requires a compatible European smart meter; it is not a universal clamp meter. Document check only; not a hands-on test or verification of every regional or firmware variant.
Metering
Accuracy	±1% Manufacturer source The stated energy-measurement tolerance is one percent. NodOn Zigbee Smart Energy Monitor manufacturer product page → Source section SEM-4-1-00 features and technical data Model NodOn Zigbee Smart Energy Monitor Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Class 1.0 to IEC 61557-12, stated as a 1% tolerance, over a measurement range of 50 mA to 63 A and a base current of 10 A	Not applicable / unspecified Catalog note Reads the utility meter's own registers, so accuracy is the meter's
Bidirectional Metering	Yes Manufacturer source Bidirectional measurement is specified. NodOn Zigbee Smart Energy Monitor manufacturer product page → Source section SEM-4-1-00 features and technical data Model NodOn Zigbee Smart Energy Monitor Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Bidirectional measurement reports consumption and production separately, which is what makes solar self-consumption and export readable \| Zigbee2MQTT exposes the consumed total as energy and the production side as produced_energy for this exact model	Yes Catalog note Reports both consumption and feed-in registers
Branch Ct Rating	Not applicable / unspecified	Not applicable / unspecified
Included Ct Sensors	Not applicable / unspecified Catalog note Inline measurement through the module's own terminals, with no current transformer involved	Not applicable / unspecified Catalog note Optical reading head, no current transformers involved
Main Ct Rating	Not applicable / unspecified Catalog note Rated up to 63 A directly on the circuit, without a current transformer	Not applicable / unspecified
Monitored Circuits	1 Manufacturer source The meter monitors one circuit. NodOn Zigbee Smart Energy Monitor manufacturer product page → Source section SEM-4-1-00 features and technical data Model NodOn Zigbee Smart Energy Monitor Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note One 1P+N circuit: the line is wired through the meter's own terminals and the neutral passes alongside, so it meters a single circuit up to 63 A	1 Catalog note Whole-house totals as reported by the utility meter, no per-circuit detail
Power Factor	Yes Catalog note Reports voltage, current, active power, apparent power, power factor and AC frequency alongside the energy totals \| Zigbee2MQTT exposes power_factor, power_apparent and ac_frequency for this exact model	No
Split Phase	No Catalog note Rated 110-240 V AC 50/60 Hz as a 1P+N single-phase meter, so a 120/240 V North American split-phase service with two hot legs is out of scope	Not applicable / unspecified
Three Phase	No	Not applicable / unspecified

Know what’s behind the comparison.

The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.

Read our comparison methodology