Skip to content

Shelly 1PM Gen4

Tested with Home Assistant
Original price £19.99 - Original price £19.99
Original price
£19.99
£19.99 - £19.99
Current price £19.99
Availability:
in stock, ready to be shipped

Shelly 1PM Gen4 is a compact single-channel smart relay with integrated power monitoring, designed for switching and measuring electrical loads up to 16 A. It provides real-time power and energy monitoring, making it suitable for lighting circuits, sockets, heaters, and other appliances where consumption tracking and automation are required.

As part of the Shelly Gen4 platform, the device supports Wi-Fi, Zigbee, Bluetooth, and Matter connectivity, allowing it to operate either hub-free or within a larger smart home system. Its compact design allows easy installation behind switches or sockets, while the upgraded Gen4 processor delivers faster response times and reliable automation performance.

Key Features
  • Single-channel smart relay rated up to 16 A
  • Integrated real-time power and energy monitoring
  • Multi-protocol connectivity: Wi-Fi, Zigbee, Bluetooth, Matter
  • Matter-certified with Apple Home support via Matter
  • Compact retrofit design for installation behind switches or sockets
  • Supports AC and low-voltage DC power supply
  • Acts as a Wi-Fi and Zigbee extender and Bluetooth gateway
  • Supports schedules, scenes, and local automations
  • Supports MQTT, WebSocket, HTTPS, UDP, and scripting
Use Cases

Smart Appliance Control

Control high-power appliances such as heaters, kettles, or sockets with smart automation.

Energy Monitoring

Track electricity consumption of individual circuits to optimise energy usage.

Retrofit Smart Home Upgrades

Install behind switches or sockets to add smart control and energy monitoring without major rewiring.

What’s Included
  • Shelly 1PM Gen4
  • User guide
Technical Specifications
Power
Power Supply (AC): 110–230 V AC ±10%, 50/60 Hz

Power Supply (DC): 24–30 V DC

Power Consumption: < 1 W
Switching
Max Switching Voltage: 240 V AC / 30 V DC

Max Switching Current: 16 A (AC) / 10 A (DC)
Measurement & Protection
Power Monitoring: Yes

Device Temperature Protection: Yes

Overload Protection: Yes

Dry Contacts: No

Roller Shutter Mode: No
Connectivity – Wi-Fi
Protocol: 802.11 b/g/n/ax (2.4 GHz)

Range: Up to 30 m indoors, up to 50 m outdoors
Connectivity – Zigbee
Protocol: IEEE 802.15.4

Repeater Function: Yes

Range: Up to 100 m indoors, up to 300 m outdoors
Connectivity – Bluetooth
Protocol: Bluetooth 4.2

Range: Up to 10 m indoors, up to 30 m outdoors
Environmental
Operating Temperature: −20 °C to 40 °C
Physical
Dimensions: 37 × 42 × 16 mm
Free Shipping

When you spend £100 or more

Setup Guides

Step-by-step help to get started

Gift Cards

For your loved ones in any amount

Live Chat Support

Instant answers from our team

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare