Shelly 1PM GEN4

Product Introduction

The Shelly 1PM Gen4 is a compact smart relay switch with built-in power monitoring designed to automate electrical devices while tracking their energy consumption. Installed behind wall switches, sockets, or inside electrical boxes, the device allows users to remotely control lights and appliances while monitoring real-time power usage through the Shelly Smart Control platform. 

The Gen4 generation introduces multiprotocol connectivity, allowing the device to operate using Wi-Fi, Zigbee, Bluetooth, or Matter. This flexibility enables seamless integration with a wide range of smart home ecosystems while eliminating the need for a dedicated hub.

Designed for retrofit installations, the module fits into standard electrical wall boxes and supports both local and cloud control. With built-in power monitoring and advanced automation features, the Shelly 1PM Gen4 provides a powerful solution for controlling and optimising energy usage in modern smart homes.

Key Features

Smart Relay with Power Monitoring
Switch connected appliances on or off while measuring electricity consumption in real time.

Multiprotocol Connectivity
Supports Wi-Fi, Zigbee, Bluetooth, and Matter for flexible smart home integration.

Remote Device Control
Control lights and appliances remotely through the Shelly Smart Control app or compatible automation platforms.

Energy Usage Tracking
Built-in power meter records consumption data, helping identify energy-intensive devices.

Advanced Automation and Scripting
Supports schedules, scenes, scripting, MQTT, webhooks, and automation triggers.

Compact Retrofit Design
Small form factor fits behind existing switches and sockets for easy smart upgrades.

Smart Home Integration

The Shelly 1PM Gen4 integrates with multiple smart home ecosystems and automation platforms.

Supported integrations include:

• Shelly Smart Control App
• Amazon Alexa
• Google Home
• Apple Home (via Matter)
• Home Assistant
• MQTT and REST API automation systems

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

• Switching lights on or off remotely
• Monitoring energy consumption of appliances
• Triggering automation when power usage changes
• Scheduling devices to operate during specific times

Technical Specifications

Product Type: Smart Relay Switch with Power Monitoring
Model: Shelly 1PM Gen4
Connectivity: Wi-Fi 2.4 GHz, Zigbee, Bluetooth, Matter
Channels: 1 Channel
Power Supply: 110–240V AC or supported low-voltage supply
Maximum Switching Current: Up to 16A
Power Monitoring: Real-time energy measurement
Processor: Advanced multiprotocol wireless MCU
Memory: 8 MB flash
Operating Temperature: −20 °C to 40 °C
Dimensions: Approx. 37 × 42 × 16 mm

What’s in the Box

Shelly 1PM Gen4 smart relay
Quick start guide