Shelly EM — Wi-Fi Energy Meter with 50A CT Clamp

Shelly EM — Wi-Fi Energy Meter with 50 A Clamp

The Shelly EM (model SHEM-1) is a smart Wi-Fi energy meter with 2 independent measuring channels. This pack includes 1x 50 A current clamp. It monitors electricity consumption in real-time, controls a contactor, and detects solar generation. Ideal for homes, commercial installations, and photovoltaic systems. No proprietary hub or subscriptions required.

Technical Specifications — Shelly EM

• Model: SHEM-1
• Connectivity: WiFi 802.11 b/g/n (2.4 GHz)
• RF Band: 2400 – 2500 MHz
• WiFi Range: Up to 30 m indoors / 50 m outdoors
• Power Supply: 110–230 V ±10%, 50/60 Hz
• Measuring Channels: 2 independent channels
• Max Current per Channel: Up to 120 A (with appropriate clamp)
• Included Clamp: 50 A (accuracy ±1%)
• Contactor Output: Yes — up to 2 A / 230 V
• Measured Parameters: Active and reactive power, voltage, current, power factor, accumulated energy
• Protocols: MQTT, HTTP REST API, CoAP
• Certifications: CE, RoHS

Key Features

• 2 independent measuring channels to monitor 2 circuits simultaneously
• 50 A clamp included for domestic installations and individual circuits
• Contactor control: automatically cuts off supply if a limit is exceeded
• Internal temperature sensor for overheating protection
• Compatible with solar panels: monitors production and consumption simultaneously
• Consumption history and real-time data from the Shelly app
• Native integration with Home Assistant via MQTT (local control)
• No proprietary hub — full local control

Compatible with

• Home Assistant (MQTT, local control)
• Amazon Alexa
• Google Home
• MQTT, HTTP REST API, CoAP

Use Cases

• Monitoring total household electricity consumption
• Managing domestic solar and photovoltaic energy
• Controlling heavy-load appliances via contactor
• Detecting anomalous consumption and optimizing energy expenditure
• Monitoring individual circuits (heating, heat pump, etc.)

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