Product Introduction

The Shelly Pro 4PM is a professional-grade four-channel smart relay designed for installation inside electrical distribution boards using a DIN-rail mounting system. It allows users to remotely control and monitor up to four electrical circuits independently while measuring real-time energy consumption for each channel. 

Each channel supports switching loads of up to 16 A, with a total device capacity of 40 A, making it suitable for controlling lighting circuits, appliances, heating systems, and other electrical loads in residential or commercial installations.

The device supports LAN, Wi-Fi, and Bluetooth connectivity, allowing reliable communication with smart home systems while also providing flexible installation options for both wired and wireless networks. With advanced automation features and integrated power monitoring, the Shelly Pro 4PM provides precise control and energy management for modern smart buildings.

Key Features

Four-Channel Smart Relay Control
Control up to four separate electrical circuits independently from a single DIN-rail mounted smart relay.

Integrated Power Monitoring
Each channel includes precise energy measurement, allowing real-time monitoring of electricity consumption.

LAN, Wi-Fi, and Bluetooth Connectivity
Supports Ethernet LAN for stable connectivity, Wi-Fi for wireless operation, and Bluetooth for easy device setup.

Professional DIN-Rail Installation
Designed for mounting in electrical distribution boards for professional smart home or building automation systems.

Advanced Automation and Scripting
Supports scripting, schedules, webhooks, and automation triggers for complex smart home control scenarios.

Enhanced Safety Protections
Includes built-in protections such as overheating, overload, and overvoltage safeguards for safer operation.

Smart Home Integration

The Shelly Pro 4PM integrates with a wide range of smart home ecosystems and automation platforms.

Supported integrations include:

• Shelly Smart Control App
• Amazon Alexa
• Google Home
• Samsung SmartThings
• Home Assistant
• MQTT and REST API automation systems

Once connected, the relay can participate in automation scenarios such as:

• Controlling multiple lighting circuits in a building
• Monitoring energy usage of individual circuits
• Automatically switching off equipment during off-hours
• Triggering automation routines based on schedules or sensors

Technical Specifications

Product Type: Professional Smart Relay with Power Monitoring
Model: Shelly Pro 4PM
Channels: 4 independent outputs
Power Supply: 110–240 V AC
Maximum Switching Current: 16 A per channel (40 A total)
Connectivity: Wi-Fi 2.4 GHz, Ethernet (LAN), Bluetooth
Power Monitoring: Real-time energy measurement per channel
Mounting: DIN-rail installation
Device Power Consumption: < 4 W
Operating Temperature: −20 °C to 40 °C
Dimensions: Approx. 96 × 53 × 59 mm

What’s in the Box

Shelly Pro 4PM smart relay
Quick start guide