Relay Shelly 1 Gen4 — Shelly compact smart relay with WLAN, Matter, Zigbee, Bluetooth, max 16A

Shelly 1 Gen4 is a compact smart relay designed for inline installation to control electrical loads up to 16A. The module combines multiple wireless protocols — WLAN, Matter, Zigbee and Bluetooth — to provide flexible connectivity options for various smart home setups. Its small form factor allows it to fit behind switches, inside junction boxes or within appliance housings, enabling remote control, local automation and scheduling of lights and other electrical devices.

Advantages

The relay supports several communication standards, which simplifies integration with different ecosystems and voice assistants. Rated for switching currents up to 16A, it is suitable for a wide range of household circuits while maintaining a compact size for concealed installation. The device offers reliable remote control over WLAN and local connectivity via Zigbee and Bluetooth, and Matter compatibility ensures broader interoperability across platforms.

Suitable for

• Switching and automating lighting circuits
• Controlling small household appliances and fans (within rated current)
• Integrating with smart home platforms and voice assistants via WLAN, Matter or Zigbee
• Retrofit installations behind wall switches or inside junction boxes

Key specifications

• Maximum switching current: 16 A
• Supported wireless interfaces: WLAN, Matter, Zigbee, Bluetooth
• Compact form factor suitable for in-line and flush-mounted installation
• Remote control, scheduling and local automation capabilities
• Designed for AC mains circuits in residential environments

How to use

Install the Shelly 1 Gen4 inline with the live and switched conductors according to local electrical regulations and wiring practices, ensuring power is disconnected during installation. After mounting, power the device and use the Shelly mobile app or a compatible hub to discover the relay via WLAN, Zigbee or Bluetooth. Configure the relay in the app to set schedules, scenes or automation rules; enable Matter if required for cross-platform control. Test switching operation with the intended load and verify correct behavior with any connected automation system or voice assistant.

Recommendations

Follow local electrical codes and, if unsure, consult a qualified electrician for installation. Verify that connected loads do not exceed the 16A rating and that wiring and protective devices are properly sized. Use the device’s firmware update mechanism in the app to keep connectivity and security features up to date.