Shelly Pro EM-50

Shelly Pro EM-50 — Dual Channel WiFi Energy Meter with 2 x 50A Clamps

The Shelly Pro EM-50 (model SPEM-002CEBEU50) is a 2-channel smart energy meter with Gen2 firmware and DIN rail mounting. It includes 2 x 50A current transformers and a contactor output for high-load control. Compatible with Home Assistant, Alexa, and Google Home without a hub or subscriptions.

Technical Specifications — Shelly Pro EM-50

• Model: SPEM-002CEBEU50
• Connectivity: WiFi 802.11 b/g/n (2.4 GHz) + Ethernet (RJ45) + Bluetooth BLE 4.2
• Power Supply: 110–240V AC, 50/60 Hz
• Max Current: 2 × 50A (via included CTs)
• Measurement Channels: 2
• Contactor Output: 1 (for high-load control)
• Accuracy: Class B
• Measurement: Voltage, current, active/apparent power, accumulated energy, power factor — bidirectional
• Storage: 60 days at 1-minute intervals
• Operating Temperature: 0 – 40°C
• Dimensions: 94 × 19 × 69 mm
• Weight: 63 g
• Mounting: DIN rail
• Certifications: CE, RoHS
• Protocols: MQTT, HTTP REST API, WebSockets, Webhooks, Scripting (mJS), Modbus TCP

Main Features

• 2 x 50A current transformers included — installation without cutting cables
• Integrated contactor output for high-load control (HVAC, etc.)
• Bidirectional measurement: monitors consumption and solar production simultaneously
• 60 days of data storage at 1-minute resolution
• Dual connectivity WiFi + Ethernet RJ45 for maximum reliability
• Ultra-compact 1 DIN module design
• Compatible with photovoltaic installations and self-consumption
• mJS scripting for custom automations

Compatible with

• Home Assistant (local, no cloud)
• Amazon Alexa
• Google Home
• MQTT, HTTP REST API, mJS Scripting, Modbus TCP

Use Cases

• Monitoring electricity consumption in homes and apartments
• Supervising photovoltaic production and controlling self-consumption
• Contactor control for managing HVAC systems
• Energy management in businesses and offices
• Integration into DIY home automation systems with Home Assistant

Official Shelly distribution. Shipping from Spain. Official Shelly warranty.