Shelly Pro EM-50 energy meter

Shelly Pro EM-50, single-phase energy meter for DIN rail mounting, with integrated switch for relay control. Control and monitor the consumption of household appliances, electrical circuits, and office equipment. Wi-Fi energy meter with contactor control.

• LAN, Wi-Fi, and Bluetooth connectivity for high security and reliability
  
• Displays accumulated energy as well as real-time values of voltage, current, active and apparent power per phase.
  
• Power measurement - two independent measurement channels for the same phase
  
• 4-quadrant measurement with optical pulse display of energy consumption
  
• Measurement accuracy Class B (IEC 62053-21)
  
• Compatible with photovoltaic energy
  
• Stores data in non-volatile memory that can be retrieved at 1-minute intervals for up to 60 days.
  
• No hub needed! Easy control via the Shelly Smart Control app, most platforms and protocols, and voice assistants. Use it with Alexa, Home Assistant, or your favorite automation system.
  
• Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS, custom certificates, and the Modbus TCP protocol.
  
• The package includes two 50 A current transformers.

With an active energy measurement accuracy of 1%, the Shelly Pro EM-50 can be used to monitor consumption and control any household appliance, electrical circuit, or office equipment. The device features 60 days of data history with 1-minute intervals. Additionally, the scripting capabilities enable the execution of complex scenarios and offer extended monitoring options.

• Wi-Fi, LAN, and Bluetooth connectivity - Simultaneous use of Ethernet and Wi-Fi. Supports MQTT, incoming and outgoing WebSocket, UDP, and mTLS.
  
• Accuracy class B (active energy) - The Shelly Pro EM-50 has a measurement accuracy of 1%.
  
• Integrated switch - 2A dry contact switch for contactor control
  
• MODBUS support - Enables quick and easy integration into existing industrial systems.
  
• Power measurement - Monitors two independent channels on the same phase
  
• Scripting - The Shelly Pro EM-50 fully supports mjS scripting, allowing you to create additional functions.

Perfect for SMB owners - If you own a small or medium-sized business, you probably suffer from excessive energy consumption. Some machines and devices are constantly on. With the Shelly PRO EM-50, you can measure and reduce consumption with the greatest precision by turning off devices like water dispensers, laminators, and lighting at night. The smart device can also be used for preventive measurements by monitoring abnormal behavior of HVAC systems, air compressors, refrigerators, and other devices.

If you have a photovoltaic (PV) system at home, the Shelly PRO EM-50 can help you measure grid current and imported energy from renewable sources. It also features configurable load control, allowing you to redirect excess energy from renewable sources to electronic devices in your home and optimize your energy consumption. For example, you can use the Shelly PRO EM-50 to charge your car or household appliances when your PV system produces excess energy.

Full compatibility - Shelly devices are compatible with Alexa, Google Home, Android, and iOS. Together with the voice assistant, you can control Shelly devices with your voice!

Shelley Smart Control - An app to monitor your rooms, energy consumption, and expenses. Customize your dashboards, receive detailed usage reports, and keep track of your energy bill.

• Dimensions (HxWxD): 94x19x69 ±0.5 mm
  
• Weight: 63 ±1 g
  
• Mounting: DIN-rail
  
• Max. tightening torque screw terminals: 0.4 Nm / 4.43 lbin
  
• Conductor cross-section: 0.5 to 2.5 mm² / 20 to 14 AWG (solid, flexible, and with ferrules)
  
• Stripped conductor length: 6 to 7 mm / 0.24 to 0.28 inch
  
• Housing material: Plastic
  
• Color: White
  
• Ambient temperature: -20 °C to 40 °C
  
• Humidity: 30% to 70% RH
  
• Max. altitude: 2000 m
  
• AC supply voltage: 110-240 V, 50/60 Hz
  
• DC supply voltage: N/A
  
• Device power consumption: < 3 W
  
• Max. AC switching voltage: 240 V
  
• Max. DC switching voltage: N/A
  
• Max. switching current: 2 A
  
• Internal temperature sensor: Yes
  
• Voltage meter (RMS): 100 - 260 V
  
• Voltage meter accuracy: ±1%
  
• Current meters (RMS via CT): 0 - 50 A
  
• Current meter accuracy: ±1% (5 - 50 A), ±2% (0 - 5 A)
  
• Power and energy meters: Active and apparent power, Active and apparent power, Power factor
  
• No-load threshold: 30 VA per phase
  
• Measurement data storage: At least 60 days with a data interval of 1 minute
  
• Data export: CSV for recorded PQ values, export in JSON format via RPC
  
• RF band: 2400 - 2495 MHz
  
• Max. RF power: <20 dBm
  
• WLAN protocol: 802.11 b/g/n
  
• WiFi range: Up to 30 m indoors and 50 m outdoors (depending on local conditions)
  
• Bluetooth protocol: 4.2
  
• Bluetooth range: Up to 10 m indoors and 30 m outdoors (depending on local conditions)
  
• CPU: ESP32-D0WDQ6
  
• Flash: 16 MB
  
• Webhooks (URL actions): 20 with 5 URLs per hook
  
• Scripting: Yes
  
• MQTT: Yes
  
• CoAP: No