Shelly Pro 3EM-120A V2 DIN-Rail Energy Meter for EcoFlow STREAM 5000
- Measure grid import and export to support energy management with a compatible EcoFlow STREAM 5000 or STREAM AC 5000 system.
- Monitor single-phase or three-phase installations using three included 120A current-transformer clamps.
- View live electrical readings and stored energy data through Ethernet or Wi-Fi, with no separate Shelly hub required.
Shelly Pro 3EM-120A V2 energy meter for EcoFlow STREAM 5000
The Shelly Pro 3EM-120A V2 is a DIN-rail energy meter for monitoring electricity consumption and generation in homes and suitable commercial premises. Shelly identifies the V2 as model SPEM-003CEBEU, an identifier listed by EcoFlow for STREAM 5000 and STREAM AC 5000. When correctly installed and paired, it supplies the grid-exchange measurements used by the EcoFlow system’s energy-management functions.
Key features
- EcoFlow-compatible model identification: SPEM-003CEBEU appears in EcoFlow’s STREAM 5000 compatibility list. Confirm the supplied unit and supported firmware before commissioning.
- Flexible measurement: monitor a single-phase supply, a three-phase supply or three selected circuits on the same phase, using the appropriate wiring and configuration.
- Detailed electrical readings: measure voltage, current, active and apparent power, power factor and accumulated energy, with Class B active-energy accuracy stated by Shelly.
- Local data and networking: Ethernet, 2.4GHz Wi-Fi, an embedded web interface and at least 45 days of one-minute records according to the detailed manufacturer specification.
- Automation options: scripting, webhooks and MQTT support, plus Matter support after the required firmware update.
Where to use
Use the Shelly Pro 3EM-120A V2 for whole-home monitoring, compatible EcoFlow STREAM installations, offices, retail premises, agricultural buildings and selected commercial distribution-board applications. It measures the circuits where its CT clamps are installed; it does not automatically identify every individual appliance.
For EcoFlow integration, the installer must position the sensors and configure the meter to measure the correct grid connection point. A typical single-phase UK home does not need a three-phase supply to use this meter.
This device measures energy and has no built-in load-switching relay. Controlling a larger load requires the optional Shelly Pro 3EM Switch Add-on and a suitably rated external contactor, specified separately. It is not a circuit breaker or a replacement for electrical protective devices.
Installation and EcoFlow compatibility
A qualified electrician must install the meter, CT clamps, voltage-reference wiring and suitable protective devices in an appropriate enclosure. Energian can help with product selection and installation through trusted partners.
Confirm model SPEM-003CEBEU on the supplied V2 device and check the current EcoFlow app and firmware requirements. EcoFlow also lists SPEM-003CEBEU120; compatibility must not be assumed for the 400A or 3CT63 variants.
Do not assume that this meter duplicates every function of EcoFlow’s Smart Meter Dual CT. In particular, EcoFlow’s Dual CT circuit-protection features must not be attributed to the Shelly meter without confirmation.
Technical specifications
Specifications below use Shelly’s current Pro 3EM 120A V2 product documentation. The attached user guide is dated 48/2022 and differs in some radio and storage specifications; use the current instructions applicable to the delivered device.
| Specification | Value |
|---|---|
| Product identification and package contents | |
| Brand | Shelly |
| Product designation | Shelly Pro 3EM 120A V2 |
| Device model stated on the V2 product page | SPEM-003CEBEU |
| Default device SSID | ShellyPro3EM-XXXXXX |
| Meter type | DIN-rail AC energy meter with external current transformers |
| Supported electrical arrangements | Single-phase or three-phase; three separate circuits of one phase can also be monitored |
| Standard package | 1 × energy meter; 3 × 120A current transformers; installation guide |
| Optional neutral CT | Additional compatible CT required; not included |
| EcoFlow-compatible model identifiers | SPEM-003CEBEU and SPEM-003CEBEU120 are listed by EcoFlow for STREAM 5000 / STREAM AC 5000 |
| EcoFlow connection qualification | Requires supported app/firmware, correct network setup and pairing. Confirm the exact supplied device identifier. |
| Built-in switching relay | No |
| Optional load control | Shelly Pro 3EM Switch Add-on with an appropriately rated external contactor; not included |
| Electrical supply and protection | |
| AC supply voltage | 100–260V AC |
| Supply frequency | 50/60Hz |
| DC supply | Not supported |
| Power consumption | <3W |
| Manufacturer-specified external protection | B- or C-curve; maximum rated current 16A; minimum breaking capacity 6kA; energy-limiting class 3 |
| Protection-rating clarification | The 16A maximum relates to protection of the meter’s wired supply/voltage-reference connections. The 120A rating relates to CT measurement, not current carried through its voltage terminals. |
| Measurement capabilities and accuracy | |
| Measurement method | External CTs with wired voltage-reference connections |
| Voltage measurement range per phase, RMS | 100–260V |
| Voltage accuracy | ±1% |
| Current measurement range | 0–120A per phase; optional neutral measurement with an additional CT |
| Compatible CT designation | CT 120A |
| Current accuracy, 2–120A | ±1% |
| Current accuracy, 1–2A | ±2% |
| Current accuracy, below 1A | ±5% |
| Active-energy accuracy | Class B; IEC 62053-21 compliance stated by Shelly based on manufacturer testing |
| Measured quantities | Active and apparent power; active and apparent energy; power factor; fundamental active and fundamental reactive energy; voltage and current |
| Energy-flow measurement | Four-quadrant measurement; consumption and generation monitoring |
| Phase-sequence error detection | Configurable option |
| Channel-to-channel calibration | Supported; minimum 500W load per channel |
| No-load threshold | 30VA per channel |
| Low-load energy-recording qualification | Shelly states that when the total load falls below its specified threshold, measured power remains visible but consumed energy is not accumulated in the energy statistics. |
| Internal temperature sensor | Yes, with reporting |
| Optical energy indication | Energy-count LED with pulse frequency dependent on measured energy flow |
| Data storage and local access | |
| Detailed specification: on-device records | At least 45 days at one-minute resolution |
| Storage qualification | Shelly also advertises 60 days elsewhere on the V2 product page. The detailed specification’s minimum 45-day figure is used here. |
| Memory type | Non-volatile storage |
| Timekeeping | Real-time clock retains timestamps if connection to the SNTP server is lost |
| Data export | CSV for recorded electrical values; JSON through RPC |
| Local management | Embedded web interface |
| Standalone operation | Supported on a local LAN and/or Wi-Fi network |
| Shelly cloud requirement | Optional for standalone Shelly monitoring; EcoFlow features have their own connection requirements |
| Dedicated Shelly hub | Not required for LAN/Wi-Fi operation |
| Networking and automation | |
| Ethernet | RJ45 port |
| Wi-Fi protocol | 802.11 b/g/n |
| Wi-Fi band | 2.4GHz |
| RF band in current specification | 2,400–2,495MHz |
| Maximum RF power in current specification | <20dBm |
| Published Wi-Fi range | Up to 30m indoors and 50m outdoors, depending on local conditions |
| Bluetooth protocol in current specification | 4.2 |
| Published Bluetooth range | Up to 10m indoors and 30m outdoors, depending on local conditions |
| Bluetooth role | Device inclusion/setup |
| Matter | Matter-upgradable after updating to the required firmware; this does not itself establish EcoFlow compatibility |
| Network protocols | MQTT, HTTP and WebSocket |
| Inbound connection security | TLS support |
| MODBUS | Supported for voltage, current, power and energy data |
| Webhooks | 20, with up to 5 URLs per webhook |
| Scripting | Supported |
| CoAP | Not supported |
| Physical specifications and terminals | |
| Dimensions, H × W × D | 94 × 19 × 69mm, ±0.5mm |
| Device weight | 62g ±1g; excludes CTs and packaging |
| Mounting | DIN rail |
| Housing | White plastic |
| Maximum screw-terminal torque | 0.4Nm |
| Conductor cross-section | 0.5–2.5mm²; solid, stranded or bootlace-ferrule termination |
| Conductor stripping length | 6–7mm |
| Voltage inputs | A, B and C phase inputs; N neutral. C also supplies device power. |
| Current-transformer inputs | IA, IB and IC for phase measurements; IN for optional neutral measurement |
| Add-on interface | Shelly proprietary serial interface; hazardous voltage may be present when powered |
| User button | Short press operates an attached switch add-on; hold 5 seconds for device access point; hold 10 seconds for factory reset |
| Indicators | Power, Wi-Fi, LAN and energy count |
| Processor | ESP32-D0WDQ6 |
| Flash memory | 16MB |
| Environmental and installation requirements | |
| Ambient operating temperature | −20°C to +40°C |
| Relative humidity | 30–70% |
| Maximum altitude | 2,000m |
| Installation environment | Suitable electrical enclosure; do not install where the device can get wet |
| Installation personnel | Qualified electrician |
| Isolation | Isolate and prove dead before installing or changing electrical connections. |
| LAN connection precaution | Connect or disconnect the Ethernet cable only while the meter is powered off, as instructed by Shelly. |
| Optional neutral CT | Not required for standard phase-current measurement; specify separately if neutral monitoring is needed. |
| Compliance documentation | EU declaration of conformity, UKCA declaration of conformity and UK PSTI statement of compliance available from Shelly’s current product documentation |
| Manufacturer guarantee | Shelly advertises a 5-year producer guarantee for the Pro range; applicable activation, registration and regional terms must be checked. |
Documents available for download
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UK expert support
Energian’s UK team can help check EcoFlow compatibility, metering requirements and installation options. Contact us by phone, email or live chat with questions or support requests, or arrange an in-person consultation at our office. Installation can be arranged through trusted partners.