Shelly 1 Gen4

• Universally applicable WLAN relay with potential-free contacts – ideal for retrofitting existing installations
• Multi-protocol connectivity: Supports Wi-Fi, Bluetooth and Zigbee – can be flexibly integrated into existing systems
• Local and cloud-based control with web interface – full control even without the cloud
• Compatible with Amazon Alexa, Google Assistant and Samsung SmartThings for voice-controlled automation
• Advanced features such as KNX net/IP support, schedules and custom scripts
• Ideal for smart retrofitting behind switches, sockets or in flush-mounted boxes – extremely compact
• Integrated overheating protection for maximum operational safety

Intelligent control with maximum flexibility – Shelly 1 Gen4

The Shelly 1 Gen4 is a sophisticated, next-generation smart home relay module specifically designed for flexible and reliable control of electrical devices. With its compact design, the module fits behind traditional light switches, sockets, or directly into junction boxes, offering you a powerful solution for modernizing your electrical installation—without the need to install new wiring.

Optimal connectivity thanks to modern wireless standards

With support for Wi-Fi (802.11 b/g/n) , Bluetooth 5.0 , and Zigbee, the Shelly 1 Gen4 enables seamless integration into your existing smart home system. The Bluetooth function significantly simplifies initial setup, while Zigbee is ideal for integration into mesh networks. Direct control via Wi-Fi also allows complete autonomy from the manufacturer's cloud service – if desired.

Flexible control – locally and globally

Thanks to the integrated web interface, the Shelly 1 Gen4 can be configured and operated entirely locally – without an app or internet connection. However, if necessary, the cloud connection allows you to monitor and control your devices remotely. This way, you always have control over your electrical installation – whether at home or while traveling.

Potential-free switching contact for maximum versatility

The integrated dry contact relay allows the Shelly 1 Gen4 to be used in low-voltage circuits or to control more complex applications such as garage door openers, heating systems, or alarm systems. The device is designed for resistive loads up to 16 A , thus offering a wide range of applications – from light switches to roller shutter controls.

Comprehensive integration and automation options

The Shelly 1 Gen4 supports common smart home platforms such as Amazon Alexa , Google Assistant , and Samsung SmartThings and can be integrated into existing automation systems via MQTT , HTTP API , webhooks , or KNX net/IP . Additionally, the integrated scripting language ( Shelley Script ) allows for customized automation logic directly on the device – without the need for an additional server.

Smart functions for modern living spaces

Whether it's custom schedules , sunrise and sunset synchronization, or complex scenarios based on user-defined parameters, the Shelly 1 Gen4 leaves nothing to be desired. With features like the integrated BLE gateway or optional use as a Wi-Fi or Zigbee repeater, the device not only increases its own range but also improves the network coverage of other IoT devices in your home.

Maximum security and reliability

The Shelly 1 Gen4 is equipped with overheating protection and meets the highest safety requirements. Installation is via robust screw terminals that ensure a secure connection to cables and switches. Its compact design makes it ideal for use in a wide variety of environments: from single-family homes to multi-unit apartments to smaller commercial units.

Technical specifications