Device profile · Specifications & compatibility
Refoss EM01P
Refoss · Energy Monitors · Model EM01P
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- Refoss EM01P lists Real Time Updates: 1 min; Home Assistant; 2.4 GHz Wi-Fi.
- Check the actual sampling and reporting intervals; the label does not specify latency.
Browse more from Refoss or explore all energy monitors in our catalog.
- Recorded year
- 2026
- Recorded warranty
- ?
- Dimensions
- 34 x 34 x 20 mm
- Weight
- ?
The details that shape your choice
Refoss EM01P Quick Features
Start with these specifications, then check the full details and conditions below.
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From specification to decision
Refoss EM01P: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities. Plug-and-play, no custom plugins required
View Home Assistant details →
What to consider
Matter is listed as unsupported; check another documented integration if Matter is essential to your setup.
View Matter details →Apple Home support is listed as unavailable; do not assume the device appears directly in Apple Home.
View Apple Home details →
Still needs verification
Confirm these details if they matter to your setup.
Questions About Refoss EM01P
Does Refoss EM01P support real-time updates?
Real Time Updates: 1 min. Check the actual sampling and reporting intervals; the label does not specify latency. Minute-level real-time power data
View Real Time Updates specifications →Does Refoss EM01P support Matter?
No, according to the listed specifications. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter specifications →Does Refoss EM01P work with Home Assistant?
Home Assistant integration is documented. This optical reading head requires a compatible European smart meter; it is not a universal clamp meter. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
Source: Refoss EM01P manufacturer product page · Checked 2026-10-04
View Home Assistant specifications →Does Refoss EM01P work with Apple Home?
No, according to the listed specifications. Check the model, firmware, exposed controls and any additional hardware requirements.
View Apple Home specifications →Does Refoss EM01P connect to 2.4 GHz Wi-Fi?
Yes, according to the listed specifications. Check the network security mode and setup requirements before connecting the device.
View 2.4 GHz Wi-Fi specifications →Explore the full picture
Refoss EM01P Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
3 of 39 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →
Data Monitoring6 fields
| Real Time Updates | 1 minDetails & conditionsMinute-level real-time power data |
|---|---|
| Data History | 5 yearsDetails & conditionsLocal storage plus free cloud, daily data kept up to 5 years |
| Energy Cost Tracking | Yes |
| Time Of Use Rates | No |
| Data Export | YesDetails & conditionsDaily, weekly and monthly reports for consumption and feed-in |
| Usage Alerts | Not recorded |
Connectivity8 fields
| 2.4 GHz Wi-Fi | Yes |
|---|---|
| 5 GHz Wi-Fi | No |
| Ethernet | No |
| Bluetooth | Not recorded |
| Z Wave | No |
| Zigbee | No |
| Thread | No |
| Other | No |
Features3 fields
| Relay Output | No |
|---|---|
| Load Management | No |
| Automations | Yes |
Installation4 fields
| Breaker Panel Install | NoDetails & conditionsMagnetic mount on the meter face, no wiring and no panel work |
|---|---|
| Din Rail Mount | No |
| Smart Meter Port | YesDetails & conditionsOptical head for SML and IEC 62056 smart meters, some need a PIN from the utility |
| Power Supply | USB |
Integrations6 fields
| Google Home | No |
|---|---|
| Alexa | NoDetails & conditionsAlexa 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 |
| SmartThings | No |
| Home Assistant | YesManufacturer sourceHome Assistant integration is documented. Refoss EM01P manufacturer product page →
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. Details & conditionsPlug-and-play, no custom plugins required |
| Matter | No |
Local Control3 fields
| Local Api | YesManufacturer sourceA local API is available. Refoss EM01P manufacturer product page →
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. Details & conditionsRefoss Open API with JSON-RPC 2.0, works with the cloud switched off |
|---|---|
| Mqtt | YesManufacturer sourceMQTT is supported. Refoss EM01P manufacturer product page →
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. |
| Local Web Interface | YesDetails & conditionsBuilt-in web interface for configuration and live readings |
Metering9 fields
| Monitored Circuits | 1Details & conditionsWhole-house totals as reported by the utility meter, no per-circuit detail |
|---|---|
| Included Ct Sensors | Not applicable / unspecifiedDetails & conditionsOptical reading head, no current transformers involved |
| Main Ct Rating | Not applicable / unspecified |
| Branch Ct Rating | Not applicable / unspecified |
| Accuracy | Not applicable / unspecifiedDetails & conditionsReads the utility meter's own registers, so accuracy is the meter's |
| Split Phase | Not applicable / unspecified |
| Three Phase | Not applicable / unspecified |
| Bidirectional Metering | YesDetails & conditionsReports both consumption and feed-in registers |
| Power Factor | No |
How this device compares
Refoss EM01P vs Other Similar Models
Statistical context from 25 energy monitors in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
Smart Meter Port: 2 of 25 known answers are Yes
Installation: 8% among explicit Yes/No answers; 0 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Mqtt: 12 of 23 known answers are Yes
Local Control: 52% among explicit Yes/No answers; 2 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Local Web Interface: 13 of 24 known answers are Yes
Local Control: 54% among explicit Yes/No answers; 1 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
3 of 25 models are from Refoss
Counts energy monitors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Refoss EM01P vs Similar Energy Monitors
See how Refoss EM01P stacks up against other energy monitors in this catalog. Compare specifications, compatibility and pricing.
Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.