Device profile · Specifications & compatibility
Shelly EM Gen4
Shelly · Energy Monitors · Model S4EM-002CXCEU
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- Shelly EM Gen4 lists Matter; Home Assistant; Apple Home.
- Verify the exact device type, firmware and features exposed in your chosen platform.
- Matter support is not proof of feature parity.
Browse more from Shelly or explore all energy monitors in our catalog.
- Recorded year
- 2026
- Recorded warranty
- 3 years
- Dimensions
- 37 x 42 x 16 mm
- Weight
- 26g
The details that shape your choice
Shelly EM Gen4 Quick Features
Start with these specifications, then check the full details and conditions below.
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From specification to decision
Shelly EM Gen4: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
Matter support is listed, making it a candidate for a compatible Matter setup after model and feature checks. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity. Matter-certified out of the box
View Matter details →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.
View Home Assistant details →Apple Home support is listed as an integration option. Check the model, firmware, exposed controls and any additional hardware requirements. Via Matter
View Apple Home details →
What to consider
No specific limitation is established here. Check installation requirements and compatibility before choosing.
Still needs verification
Confirm these details if they matter to your setup.
Questions About Shelly EM Gen4
Does Shelly EM Gen4 support three-phase support?
No, according to the listed specifications. Verify the installation, sensor arrangement and regional electrical requirements with the manufacturer.
View Three Phase specifications →Does Shelly EM Gen4 support split-phase support?
No, according to the listed specifications. Check the supported electrical system and required installation procedure. Single-phase device with two current channels
View Split Phase specifications →Does Shelly EM Gen4 support Matter?
The manufacturer specifies Matter compatibility. The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
Source: Shelly EM Gen4 manufacturer product page · Checked 2026-10-04
View Matter specifications →Does Shelly EM Gen4 work with Home Assistant?
Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant specifications →Does Shelly EM Gen4 work with Apple Home?
Yes, according to the listed specifications. Check the model, firmware, exposed controls and any additional hardware requirements. Via Matter
View Apple Home specifications →Explore the full picture
Shelly EM Gen4 Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
6 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 →
Metering9 fields
| Monitored Circuits | 2Manufacturer sourceTwo current-transformer channels measure a single-phase supply. Shelly EM Gen4 manufacturer product page →
The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Document check only; not a hands-on test or verification of every regional or firmware variant. |
|---|---|
| Included Ct Sensors | 1Details & conditionsOne 50 A clamp in the box, a second CT is sold separately |
| Main Ct Rating | 50 ADetails & conditions80 A and 120 A current transformers also supported |
| Branch Ct Rating | Not applicable / unspecified |
| Accuracy | ±2% |
| Split Phase | NoDetails & conditionsSingle-phase device with two current channels |
| Three Phase | No |
| Bidirectional Metering | Yes |
| Power Factor | YesDetails & conditionsActive and apparent power and energy, plus power factor |
Connectivity8 fields
| 2.4 GHz Wi-Fi | YesDetails & conditionsWi-Fi 6 (802.11 b/g/n/ax) on 2.4 GHz |
|---|---|
| 5 GHz Wi-Fi | No |
| Ethernet | No |
| Bluetooth | YesManufacturer sourceBluetooth connectivity is documented. Shelly EM Gen4 manufacturer product page →
The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Document check only; not a hands-on test or verification of every regional or firmware variant. Details & conditionsBluetooth 5 LE |
| Z Wave | No |
| Zigbee | Zigbee Hub requiredDetails & conditionsZigbee 802.15.4 and acts as a Zigbee repeater |
| Thread | No |
| Other | No |
Data Monitoring6 fields
| Real Time Updates | Not recorded |
|---|---|
| Data History | 30 daysManufacturer sourceLocal storage retains at least 30 days of one-minute records. Shelly EM Gen4 manufacturer product page →
The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Document check only; not a hands-on test or verification of every regional or firmware variant. Details & conditionsAt least 30 days of 1-minute records stored on the device |
| Energy Cost Tracking | Yes |
| Time Of Use Rates | YesDetails & conditionsCost periods and tariff distribution in the Shelly Smart Control app |
| Data Export | YesDetails & conditionsCSV for power quality values and JSON through RPC |
| Usage Alerts | Yes |
Features3 fields
| Relay Output | YesManufacturer sourceA dry-contact relay can control an external contactor. Shelly EM Gen4 manufacturer product page →
The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Document check only; not a hands-on test or verification of every regional or firmware variant. Details & conditionsDry contact rated 2 A at 240 V for contactor control |
|---|---|
| Load Management | YesDetails & conditionsSwitch a contactor from consumption thresholds or schedules |
| Automations | Yes |
Installation4 fields
| Breaker Panel Install | YesDetails & conditionsAlso fits inside a wall box or an appliance control box |
|---|---|
| Din Rail Mount | No |
| Smart Meter Port | No |
| Power Supply | Mains (110-240 V) |
Integrations6 fields
| Google Home | Yes |
|---|---|
| Alexa | Yes |
| Apple Home | YesDetails & conditionsVia Matter |
| SmartThings | Yes |
| Home Assistant | Yes |
| Matter | YesManufacturer sourceThe manufacturer specifies Matter compatibility. Shelly EM Gen4 manufacturer product page →
The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Document check only; not a hands-on test or verification of every regional or firmware variant. Details & conditionsMatter-certified out of the box |
Local Control3 fields
| Local Api | YesDetails & conditionsRPC over HTTP and WebSocket, plus webhooks and scripting |
|---|---|
| Mqtt | Yes |
| Local Web Interface | YesManufacturer sourceThe meter has an embedded web interface. Shelly EM Gen4 manufacturer product page →
The relay controls a contactor; its existence does not establish a suitable rating for directly switching a high-power load. Document check only; not a hands-on test or verification of every regional or firmware variant. |
How this device compares
Shelly EM Gen4 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
Relay Output: 4 of 25 known answers are Yes
Features: 16% among explicit Yes/No answers; 0 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Bluetooth: 10 of 20 known answers are Yes
Connectivity: 50% among explicit Yes/No answers; 5 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.
Brand representation in this directory
8 of 25 models are from Shelly
Counts energy monitors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Shelly EM Gen4 vs Similar Energy Monitors
See how Shelly EM Gen4 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.