Shelly PRO 3EM 120A WiFi Dual-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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