Shelly EM PRO Wi-Fi Energy Meter
$135.00
Shelly Pro EM-50 is a DIN rail mountable two-channel, single-phase professional energy meter. It has an integrated switch with dry contacts for contactor control. Monitor electricity usage in real-time and record historical energy usage for up to 12 months. Professional DIN Rail mountable and includes 2 x 50A energy metering clamps. Monitor up to 2 seperate circuits independently.
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SHELLY PRO EM.
Professional DIN rail mountable two-channel, 50A single-phase energy meter.
4-quadrant measurement
High accuracy
Shelly Pro EM has a measurement accuracy of within 1%.
MODBUS support
Wi-Fi, LAN, and Bluetooth
Supports simultaneous Ethernet and Wi-Fi usage. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
Power monitoring
Scripting functionalities
Shelly Pro EM fully supports mjS scripting, allowing you to create further features, functionalities and interoperability.
Industry-grade security.
Shelly Pro EM supports mTLS for MQTT, HTTP, and secure outbound WebSockets. Its industry-grade security allows for direct connections to your cloud infrastructure, reducing the cost of deploying complex networks and VPNs.
Shelly Pro EM brings support for MODBUS for voltage, current, power, and energies. You can accurately sample your energy usage and instantaneous values of voltage, current, and power. Our new firmware platform allows for custom implementation that can report as fast as every 100ms to your infrastructure.
Thanks to Shelly Pro EM’s scripting functionalities and webhooks, you can now easily control other Shelly or Wi-Fi devices on your local network. Use these capabilities to set exact parameters for HVAC, pool pumps, electric vehicle charging, etc – based on solar production. All without using “the cloud”.
Keep track of how much energy your solar panels or wind turbines are generating. Shelly Pro EM provides real-time information about the efficiency of the solar and wind energy system, as well as historical data on how much energy has been generated and consumed every minute for the past 60 days.
Energy monitoring.
Monitor your home, office or factory – and avoid additional expenses or drops in voltage that can damage your appliances and devices. Shelly Pro EM can calculate 2-way consumption: produced and used energy.
The finer details
Physical | |
| Size (HxWxD): | 94x19x69 ±0.5 mm |
| Weight: | 63 ±1 g |
| Mounting: | DIN rail |
| Screw terminals max torque: | 0.4 Nm / 4.43 lbin |
| Conductor cross section: | 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs) |
| Conductor stripped length: | 6 to 7 mm / 0.24 to 0.28 in |
Environmental | |
| Ambient temperature: | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity: | 30 % to 70 % RH |
| Max. altitude: | 2000 m / 6562 ft |
Electrical | |
| Power supply voltage AC: | 110 - 240 V, 50/60 Hz |
| Power supply DC: | No |
| Device power consumption: | < 3 W |
| Monitoring clamps: | Includes 2 x CT50 (50A) clamps |
| Max switching voltage: | 240V AC |
| Max switching current:: | 2 A (use a "contactor" for higher Amps) |
Sensors & Meters | |
| Temperature sensor: | Yes |
| Voltmeters (RMS for each phase): | 100 - 260 V |
| Voltmeters accuracy: | ±1 % |
| Ammeters (RMS via CT): | 0 - 50 A |
| Ammeters accuracy: | ±1 % (5 - 50 A), ±2 % (0 - 5 A) |
| Power and energy meters: | Active and apparent power; Active and apparent energy; Power factor |
| No load threshold: | 30 VA per phase |
| Measurement data storage: | At least 60 days of 1 min data resolution |
| Data export: | CSV for PQ recorded values, JSON format export trough RPC |
Radio & Data | |
| Wi-Fi protocol: | 802.11 b/g/n |
| Wi-Fi Band: | 2401 - 2495 MHz |
| Wi-Fi signal power: | <20 dBm |
| Wireless range: | Up to 50 m outdoors and up to 30 m indoors (depending on the building materials) |
| Bluetooth Protocol: | 4.2 |
| Bluetooth Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors |
| Ethernet: | 1 x RJ45 Ethernet socket |
MCU | |
| CPU: | ESP32-D0WDQ6 |
| Flash memory: | 16 MB |
Firmware Capabilities | |
| Webhooks (URL actions): | 20 with 5 URLs per hook |
| Scripting: | mJS |
| MQTT: | Yes |
| CoAP: | No |
OPTIONAL ACCESSORIES
Shelly Wall Display
Shelly PRO 4 Port LAN Switch
FROM OUR BLOG
An introduction to Shelly Wi-Fi smart devices
How to use Shelly Wall Display with Home Assistant
Shelly wireless 2-way switch
How to create Shelly scenes and schedules
Shelly Wi-Fi Setup & Troubleshooting Guide
Free Shelly Quick Apps for Fibaro Home Center 3
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