Description

Shelly 1PM Gen4 – Smart Switching with Real-Time Energy Monitoring

Take intelligent control of your electrical devices while keeping track of exactly how much energy they consume with the Shelly 1PM Gen4.

This compact 16A smart switch with built-in power monitoring combines remote switching, detailed energy measurement, advanced automation and four wireless technologies in a single device.

With support for Wi-Fi, Zigbee, Matter and Bluetooth, the Shelly 1PM Gen4 provides exceptional flexibility for modern smart homes and advanced automation systems.

Whether you’re automating lighting, monitoring a geyser, controlling a pump or tracking the electricity consumption of an appliance, the Shelly 1PM Gen4 gives you both smart control and actionable energy data.

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16A Smart Relay for Lights & Appliances

The Shelly 1PM Gen4 supports loads up to 16A at 240V AC, making it suitable for a wide range of household and commercial applications.

Use it to control:

• Lights
• Fans
• Geysers and water heaters
• Pumps
• Heating equipment
• Kitchen appliances
• Pool equipment
• Small machinery
• Other compatible electrical loads

Its compact design makes it ideal for retrofitting smart control into existing electrical installations.

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Real-Time Energy Monitoring

The key advantage of the 1PM is its integrated power measurement capability.

Monitor your connected equipment in real time and understand where your electricity is being used.

The Shelly 1PM Gen4 measures:

• Voltage
• Current
• Power consumption
• Energy usage

This allows you to identify energy-hungry appliances, monitor individual circuits and create automations based on actual electricity consumption.

For example:

Geyser power drops → Heating cycle completed

Appliance starts consuming power → Send notification

Power consumption exceeds threshold → Switch off load

Solar surplus available → Activate compatible load

This transforms your smart switch from a simple remote-control device into an intelligent energy management tool.

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Four Connectivity Options in One Device

The Shelly 1PM Gen4 supports Wi-Fi, Zigbee, Matter and Bluetooth, giving you the flexibility to choose how it fits into your smart home.

Wi-Fi

Connect directly to your existing 2.4 GHz Wi-Fi network without requiring a dedicated hub.

Zigbee

Integrate the device into a compatible Zigbee network for reliable, low-latency smart home control.

Matter

Use Matter for broad interoperability with compatible smart home platforms and controllers.

Bluetooth

Bluetooth enables convenient setup and allows the Shelly 1PM Gen4 to operate as a Bluetooth gateway for compatible devices.

Good to know: The Shelly 1PM Gen4 ships in Matter mode by default. Switching to Zigbee mode (via a simple button sequence) disables Matter. Wi-Fi and Bluetooth stay active either way

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Matter Smart Home Compatible

Matter makes it easier to integrate smart devices from different manufacturers into the same ecosystem.

The Shelly 1PM Gen4 can work with compatible platforms including:

• Apple Home
• Google Home
• Amazon Alexa
• Samsung SmartThings
• Home Assistant
• Other Matter-compatible ecosystems

This makes the Gen4 a strong choice for customers who want flexibility rather than being locked into a single smart home platform.

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Excellent for Home Assistant

The Shelly 1PM Gen4 is particularly well suited to Home Assistant.

Combine switching and energy measurements to create sophisticated local automations and energy dashboards.

For example:

Smart Geyser Automation

Monitor geyser power consumption and automatically control heating based on schedules, electricity tariffs or solar availability.

Appliance Monitoring

Track the electricity usage of individual appliances without installing a full-house energy monitor.

Solar Automation

Use power measurements as triggers for automations based on available solar generation.

Smart Lighting

Automatically switch lights based on occupancy, time of day or other sensors.

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No Hub Required for Wi-Fi

For Wi-Fi installations, the Shelly 1PM Gen4 connects directly to your local network.

You can control it using the Shelly Smart Control app, local network interfaces, supported smart home platforms or cloud services.

No dedicated hub is required for standard Wi-Fi operation.

This makes it easy to add smart control and energy monitoring to an existing home.

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Compact Retrofit Design

The Shelly 1PM Gen4 measures only:

37 × 42 × 16 mm

Its compact enclosure allows it to fit into many existing electrical installations, including suitable wall boxes and spaces behind switches and sockets.

This makes it particularly useful for smart home retrofits, where replacing existing switches or installing additional equipment may not be desirable.

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Advanced Energy & Safety Features

The Shelly 1PM Gen4 provides more than simple remote switching.

Built-in protection features include:

• Overtemperature protection
• Overvoltage protection
• Overcurrent protection
• Overpower protection

You can also configure automation and protection thresholds based on measured electrical parameters.

This provides greater control over both your devices and their energy consumption.

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Advanced Smart Automation

For advanced users, the Shelly 1PM Gen4 provides extensive automation capabilities.

Features include:

• Schedules
• Smart scenes
• Local actions
• Webhooks
• MQTT
• WebSockets
• HTTPS
• mJS scripting
• KNXnet/IP
• Virtual components

This makes it suitable for everything from simple scheduled lighting to sophisticated Home Assistant energy management systems.

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Zigbee Router & Bluetooth Gateway

The Shelly 1PM Gen4 can also contribute to your wider smart home network.

When used with the appropriate protocols, it can function as:

• Zigbee router – helping extend your Zigbee mesh
• Bluetooth gateway – connecting compatible Bluetooth devices

This means a single installed relay can provide additional value beyond controlling its connected load.

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Ideal Applications

The Shelly 1PM Gen4 is particularly useful for:

💡 Smart Lighting

Control lights remotely and monitor their energy consumption.

🚿 Geyser & Water Heater Monitoring

Track heating cycles and electricity consumption while automating operation.

⚡ Appliance Monitoring

Measure how much energy individual appliances use.

🏊 Pool Pumps

Schedule pump operation and monitor electricity usage.

🔥 Heating Systems

Automate compatible heating equipment and monitor consumption.

☀️ Solar Energy Automation

Use energy measurements as triggers for smart load management.

🏠 Home Assistant

Create detailed energy dashboards and local automations.

🏢 Commercial Applications

Monitor and control compatible equipment while gathering useful energy data.

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Technical Specifications

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Shelly 1PM Gen4 vs Shelly 1 Gen4

If you’re deciding between the two, the main difference is simple:

Choose the Shelly 1PM Gen4 when you want to measure electricity consumption. Choose the Shelly 1 Gen4 when you specifically need a potential-free dry contact relay.

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Why Choose the Shelly 1PM Gen4?

The Shelly 1PM Gen4 combines a powerful 16A smart relay with accurate energy monitoring in a remarkably compact device.

Its support for Wi-Fi, Zigbee, Matter and Bluetooth gives you the freedom to build your smart home around the ecosystem you already use, while its energy monitoring capabilities allow you to go beyond simple ON/OFF automation.

From smart lighting and appliance monitoring to geyser control, pool pumps, heating systems and Home Assistant energy management, the Shelly 1PM Gen4 provides a powerful and flexible foundation for modern smart home automation.

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Installation & Safety

A neutral wire is required to power the Shelly 1PM Gen4.

This product connects directly to mains electrical wiring and should be installed by a suitably qualified electrician in accordance with applicable local electrical regulations.

External 16A protection is recommended. Always verify the connected load, wiring configuration and electrical requirements before installation.