---
product_id: 561038718
title: "– Pro 3EM Switch Add-On | Expand The Capabilities of Pro 3EM with Dry Contacts 2A | Contactor Control | DIN Rail Mount | Home Automation | iOS Android App | No Hub Required"
brand: "shelly"
price: "587 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Shelly"
url: https://www.desertcart.dk/products/561038718-pro-3em-switch-add-on-expand-the-capabilities-of-pro
store_origin: DK
region: Denmark
---

# 2A dry contact switching App & voice control, no hub DIN rail mount ready – Pro 3EM Switch Add-On | Expand The Capabilities of Pro 3EM with Dry Contacts 2A | Contactor Control | DIN Rail Mount | Home Automation | iOS Android App | No Hub Required

**Brand:** shelly
**Price:** 587 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your smart setup — control, automate, and elevate effortlessly!

## Quick Answers

- **What is this?** – Pro 3EM Switch Add-On | Expand The Capabilities of Pro 3EM with Dry Contacts 2A | Contactor Control | DIN Rail Mount | Home Automation | iOS Android App | No Hub Required by shelly
- **How much does it cost?** 587 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/561038718-pro-3em-switch-add-on-expand-the-capabilities-of-pro)

## Best For

- shelly enthusiasts

## Why This Product

- Trusted shelly brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Hub-Free Smart Automation:** Manage your home or office remotely via iOS/Android app or voice assistants without extra hubs.
- • **Custom Scheduling & Scenes:** Create personalized timers and automation scenes to optimize energy use and convenience.
- • **Sleek DIN Rail Installation:** Compact, professional-grade mounting designed for clean integration into your electrical panel.
- • **Robust 2A Dry Contact Switching:** Control external devices up to 240V AC/30V DC with precision and reliability.
- • **Seamless Load Control Expansion:** Effortlessly automate load shedding and energy management with smart dry contact switching.

## Overview

The Shelly Pro 3EM Switch Add-On enhances your Shelly Pro 3EM system by adding dry contact switching capabilities rated at 2A, enabling advanced load control such as appliance disconnection and solar/battery management. It mounts neatly on a DIN rail, operates on low voltage supplied by the main device, and supports full smart automation via a dedicated app and voice assistants without requiring a hub. Ideal for professionals seeking reliable, scalable home or office energy automation.

## Description

Shelly Pro 3EM Switch Add-On | Expand The Capabilities of Pro 3EM with Dry Contacts 2A | Contactor Control | DIN Rail Mount | Home Automation | iOS Android App | No Hub Required : desertcart.co.uk: Business, Industry & Science

Review: Fantastic works fab A1 smart meter - A1 works fantastic ,great app to use for control working well with ecoflow stream .
Review: Reliable and Consumer Unit compatible - Reliable and Consumer Unit compatible. Fitted multiple units and have had perfect reliability and good accuracy for last 6 months.

## Features

- 𝗦𝗺𝗮𝗿𝘁 𝗟𝗼𝗮𝗱 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 𝗘𝘅𝗽𝗮𝗻𝘀𝗶𝗼𝗻: Adds switching capabilities to the Shelly Pro 3EM for automating load shedding, appliance disconnection, and solar/battery management
- 𝗗𝗿𝘆 𝗖𝗼𝗻𝘁𝗮𝗰𝘁 𝗦𝘄𝗶𝘁𝗰𝗵𝗶𝗻𝗴: Controls external loads with dry contacts rated at up to 240 V AC or 30 V DC, and a maximum current of 2 A
- 𝗗𝗜𝗡-𝗥𝗮𝗶𝗹 𝗠𝗼𝘂𝗻𝘁𝗶𝗻𝗴: Installs next to the Shelly Pro 3EM and operates on 3.3 V or 12 V supplied directly by the device
- 𝗔𝗽𝗽 & 𝗩𝗼𝗶𝗰𝗲 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: Control from anywhere using the Shelly Smart Control app or voice assistants like Alexa, Google Home, or SmartThings - 𝗻𝗼 𝗵𝘂𝗯 𝗿𝗲𝗾𝘂𝗶𝗿𝗲𝗱
- 𝗦𝗰𝗵𝗲𝗱𝘂𝗹𝗶𝗻𝗴 & 𝗧𝗶𝗺𝗲𝗿𝘀: Set up timers and personalized schedules per channel or create scenes for full-home automation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C718B37C |
| Are Batteries Included | No |
| Brand | Shelly |
| Colour | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,838) |
| Date First Available | 27 Jun. 2023 |
| Guaranteed software updates until | unknown |
| Item Weight | 20 g |
| Item model number | Shelly_Pro_Add |
| Manufacturer | Shelly Europe |
| Number of Lithium Metal Cells | 1 |
| Product Dimensions | 12 x 6 x 19 cm; 20 g |
| Wattage | 1 |

## Images

![– Pro 3EM Switch Add-On | Expand The Capabilities of Pro 3EM with Dry Contacts 2A | Contactor Control | DIN Rail Mount | Home Automation | iOS Android App | No Hub Required - Image 1](https://m.media-amazon.com/images/I/714nLkRns4L.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic works fab A1 smart meter
*by P***L on 4 January 2026*

A1 works fantastic ,great app to use for control working well with ecoflow stream .

### ⭐⭐⭐⭐⭐ Reliable and Consumer Unit compatible
*by A***N on 28 December 2025*

Reliable and Consumer Unit compatible. Fitted multiple units and have had perfect reliability and good accuracy for last 6 months.

### ⭐⭐⭐⭐⭐ Good quality but expensive
*by M***E on 13 February 2026*

Works exactly as described and been installed for 5 months without problem.

## Frequently Bought Together

- Shelly Pro 3EM Switch Add-On | Add-On Pro 3EM Dry Contacts DIN Rail Mounting | Home Automation | iOS Android app | No Hub Required | Solar Panels | Wind Turbines
- Shelly Pro EM 50A | Wi-Fi & LAN Energy Meter with Contactor Control | DIN-Rail | Home Automation | Bluetooth Gateway | Compatible with Alexa & Google Home | No Hub Required | Power Monitoring
- Shelly H&T Gen3 White | Wi-Fi & Bluetooth Smart Temperature & Humidity Sensor with Remote App Control | Smart Scenes | LCD Display

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**Shop now:** [https://www.desertcart.dk/products/561038718-pro-3em-switch-add-on-expand-the-capabilities-of-pro](https://www.desertcart.dk/products/561038718-pro-3em-switch-add-on-expand-the-capabilities-of-pro)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-11*