Typical Applications:
Lights • Heating & Cooling • Appliances • Doorbell • Irrigation • Garage Doors / Security Gates
Overview
The Shelly 1 Gen4 is a compact, one-channel smart switch with dry (potential-free) contacts, perfect for retrofitting behind switches, sockets, or in tight spaces. It supports multiple protocols—Wi-Fi, Zigbee, Bluetooth, and Matter—all active at the same time, for seamless smart-home integration. It can be controlled locally via a built-in web interface or managed remotely through advanced automation systems, all without needing an external hub.
Key Features
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Multi-Protocol Connectivity: Combines Wi-Fi, Zigbee (with repeater functionality), Bluetooth (v5), and Matter in one device.
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Dry Contact Relay: Allows safe switching of various devices without requiring a live voltage feed.
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Matter Certified: Works seamlessly with Matter-compatible systems, including Apple HomeKit.
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Hub-Free Operation: Compatible with popular platforms and voice assistants like Alexa, Google, HomeKit, SmartThings, and Home Assistant.
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Network Extender & Gateway: Doubles as a Wi-Fi extender, Zigbee repeater, and Bluetooth gateway for enhanced network coverage.
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Advanced Automation: Supports up to 20 schedules, 20 webhooks (each with multiple actions), scripting, MQTT, KNX integration, virtual components, and more.
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Safety & Protection: Includes an internal temperature sensor, and requires standard external circuit protection for safe operation.
Technical Specifications
| Category | Specifications |
|---|---|
| Dimensions | 37 × 42 × 16 mm (approx. 1.46 × 1.65 × 0.63 in) |
| Weight | 26 g (approx. 0.92 oz) |
| Terminals | Max torque: 0.4 Nm; suitable for 0.2–2.5 mm² (AWG 24–14); strip length: 6–7 mm |
| Housing | Blue plastic shell with grey terminals; wall-console mounting |
| Operating Conditions | –20 °C to 40 °C (–5 °F to 105 °F); 30–70 % RH; up to 2000 m altitude |
| Power Supply Options | 110–240 V AC, 24–48 V DC, or 12 V DC; < 1 W consumption; no neutral required |
| Switching Capacity | Up to 240 V AC or 30 V DC; Max current: 16 A (AC) / 10 A (DC) |
| Wireless Performance | • Wi-Fi: Up to 30 m indoors, 50 m outdoors, < 20 dBm • Bluetooth: v5, up to 10 m indoors, 30 m outdoors, < 4 dBm • Zigbee: Up to 100 m indoors, 300 m outdoors, supports repeater mode |
| Processor & Memory | ESP-Shelly-C68F microcontroller with 8 MB flash |
| Automation Features | 20 schedules, 20 webhooks, scripting, MQTT, KNX, virtual components, Wi-Fi/Zigbee extender, and BLE gateway functionality |
Installation Note
This switch is rated for a maximum of 16 A (AC) or 10 A (DC). While it supports such loads, these should only be used for short durations. For heavy or continuous operation, ensure adequate thermal and safety measures.
Summary
The Shelly 1 Gen4 elevates smart-switch functionality with:
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A compact, retrofit-friendly design
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Robust multi-protocol connectivity—including Wi-Fi, Zigbee, Bluetooth, and Matter
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Hub-free operation paired with advanced automation options
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Built-in safety and network extension capabilities
Ideal for modern smart-home applications like lighting, climate control, security systems, and irrigation—this is a sleek, versatile, and intelligent solution for automation enthusiasts and professionals alike.