Description
The Shelly 1 Gen4 is a one-channel, dry-contact smart switch built for the modern smart home. With support for Wi-Fi, Bluetooth®, Zigbee and Matter, this Gen4 version brings full interoperability across ecosystems, while offering a dry contact output ideal for controlling a wide range of loads, whether it’s lights, valves, garage doors, or other appliances. Compact in design for easy retrofit behind switches or in wall boxes, it delivers advanced automation, scripting and connectivity in one unit.
Key Features
- Multi-protocol support: Wi-Fi (2.4 GHz, WiFi 6), Bluetooth, Zigbee and Matter integration.
- Dry contact output (potential-free) for flexible switching of loads including low voltage devices.
- High load capacity: Up to 16 A on AC loads, or 10 A on DC loads.
- Compact dimensions: 37 × 42 × 16 mm; weight ~26 g.
- Supports advanced automation: scripting, webhooks, MQTT, local control and cloud integration.
- Flexible power supply options: 110–240 V AC, 24–48 V DC or 12 V DC versions.
- Enhanced safety features: Built-in temperature sensor, over-temperature protection, and compatibility for both resistive and inductive loads.
Specifications
- Supply Voltage: 110–240 V AC ±10% / 24–48 V DC / 12 V DC
- Max Switching Load:16 A at 240 V AC / 10 A at 30 V DC
- Power Consumption: < 1 W
- Connectivity: Wi-Fi 802.11 b/g/n/ax (2.4 GHz) • Bluetooth • Zigbee (802.15.4) • Matter certified
- Dimensions: (H x W x D): 37 × 42 × 16 mm
- Operating Temp.: -20 °C to +40 °C






