Shelly 1 Gen4
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Shelly 1 Gen4

£18.99

Out of stock

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Overview

Shelly 1 Gen4 is a compact single-channel smart relay with potential-free (dry contact) output, designed for controlling a wide range of electrical systems up to 16 A. The dry contact design allows safe switching of both low-voltage and mains circuits, making it suitable for applications such as gates, garage doors, boilers, lighting circuits, and contactor control where voltage isolation is required.

As part of the Shelly Gen4 platform, it supports Wi-Fi, Zigbee, Bluetooth, and Matter connectivity, allowing flexible deployment in both hub-free installations and larger smart home systems. Its compact form factor enables easy installation behind wall switches or inside electrical enclosures, while the upgraded processor delivers faster response times, improved reliability, and smooth automation performance.

Key features

  • Single-channel smart relay rated up to 16 A
  • Dry contact (potential-free) output for flexible voltage switching
  • Supports AC and DC loads with voltage isolation
  • 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

Product information

Use cases
  • Gate and Garage Door Control
  • Trigger gate motors or garage door openers using the dry contact relay output.
  • Boiler and Heating System Control
  • Integrate boilers or heating controllers into a smart automation system.
  • Contactor and Control Circuit Switching
  • Safely control low-voltage automation circuits or industrial contactors.
Technical specifications
Power
Power Supply (AC)
110–230 V AC ±10%, 50/60 Hz
Power Supply (DC)
24–48 V DC / 12 V DC (stabilized)
Power Consumption
< 1 W
Switching
Max Switching Voltage
240 V AC / 30 V DC
Max Switching Current
16 A (AC) / 10 A (DC)
Dry Contacts (Potential-Free)
Yes
Features
Power Monitoring
No
Device Temperature Protection
Yes
Overload Protection
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
What’s included
  • Shelly 1 Gen4
  • User guide

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