Shelly PRO 3EM 120A 3-Phase Energy Meter, WiFi/Bluetooth (Pro 3EM)

Shelly PRO 3EM 120A WiFi Three-Channel Electric Energy Meter
The Shelly Pro 3EM 120A is a professional three-phase electric energy meter that can be installed on a DIN rail. The device reports accumulated energy with 1% accuracy as well as real-time voltage, current, and power for each phase. It stores data for the last 60 days with a resolution of one minute for each phase, enabling precise analysis. It can operate independently on a local LAN and/or Wi-Fi network or be controlled via a home automation cloud service using MQTT, HTTP, and WebSocket protocols. Furthermore, it offers advanced scripting capabilities and extended monitoring options.






Manufacturer
Shelly


Model
SPEM-003CEBEU120


AC Power Supply Voltage
100 - 260 V, 50/60 Hz


Power Consumption
< 3 W


Internal Temperature Sensor
Yes


Voltmeters (RMS for each phase)
100 - 260 V


Voltmeter Accuracy
±1%


Ampermeters (RMS via current transformers for each phase and Neutral)
0 - 120 A


Compatible Current Transformer (CT)
CT 120A


Ampermeter Accuracy
±1% (2 - 120 A), ±2% (1 - 2 A), ±5% (0 - 1 A)


Active and Apparent Power and Energy Meters
Active and apparent power, active and apparent energy, power factor, active fundamental energy, and reactive fundamental energy


Channel Calibration at Minimum Load
500 W per channel


No-Load Threshold
30 VA per channel


Measurement Data Storage
At least 60 days with 1-minute data resolution


Wi-Fi Protocol
802.11 b/g/n


Wi-Fi Range
Up to 30 m indoors and 50 m outdoors


Bluetooth Protocol
4.2


Bluetooth Range
Up to 10 m indoors and 30 m outdoors


CPU
ESP32-D0WDQ6


Flash Memory
16 MB


Dimensions
94 x 19 x 69 ±0.5 mm


Weight
62 ±1 g


Mounting
DIN rail


Housing Material
Plastic


Ambient Temperature
-20°C to +40°C


Humidity
30% to 70% RH


Maximum Altitude
2000 m