Description
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 |
