# Shelly Pro EM-50 Energy Meter with Contactor Control

- Canonical URL: https://www.netxl.com/energy-management/shelly-pro-em-50-wifi-energy-meter-contactor-control/
- Brand: Shelly
- SKU / part number: SHELLY-PRO-EM-50
- EAN (GTIN-13): 3800235268148
- Category: Energy Management (https://www.netxl.com/energy-management/)

## Pricing (GBP, guest pricing — trade customers see account pricing via the API)
| Quantity | ex VAT | inc VAT |
| --- | --- | --- |
| 1+ | £80.66 | £96.79 |
| 5+ | £80.66 | £96.79 |
| 10+ | £80.66 | £96.79 |

## Availability and shipping
- Availability: 114 in stock
- Shipping: Royal Mail Tracked - Next Working Day — £7.19, 1 working day(s)

## Description

The Shelly Pro EM-50 is a DIN rail mountable two-channel energy meter, able to report accumulated energy, voltage, current and active power in real time. With the ability to measure energy consumption with accuracy of 1% margin of error, the EM-50 can monitor the energy consumption of any home appliance, electric circuit or office equipment, as well as support for custom scripting for complex scenes and sophisticated reporting.

The Shelly Pro EM-50 is capable of monitoring up to 50 amps of electrical current, making it suitable for smaller circuits or systems, as well as featuring two independent measurement channels on the same phase for independent power monitoring of multiple devices. The device itself also includes 2 x 50A clamps, offering safe and accurate energy consumption monitoring over both channels.
The Shelly Pro EM can also be used with contactors for larger loads, and can store data in non-volatile memory that can be retrieved for a period of up to 60 days in 1-minute intervals.
Like the rest of Shelly's portfolio, the Pro EM is compatible with a wide range of Smart Home and Voice controlled assistants like Amazon Alexa or Google Home.

## What's in the box

- 1 x SHELLY-PRO-EM-50
- 2 x 50A Clamp
- 1 x Installation Guide

## Specifications

| Specification | Value |
| --- | --- |
| Power Supply | 240V |
| Connectivity | WiFi |
| Purpose | Energy Monitoring |
| Product Series | Pro |

## Documents

- [Shelly Pro EM-50 User Manual](https://www.netxl.com/shelly/docs/shelly-pro-em-50-user-manual.pdf)

## Programmatic access

- This page in HTML: append a trailing slash instead of `.md`
- NetXL Customer API (real-time customer pricing, stock, ordering): https://api.netxl.com — OpenAPI at https://api.netxl.com/openapi.yaml
- MCP server for AI agents: https://mcp.netxl.com
- Machine-readable site index: https://www.netxl.com/llms.txt
- API documentation: https://www.netxl.com/api-docs.md