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
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