Shelly 1 Gen 4 – Next-Generation Smart Relay Switch
The Shelly 1 Gen 4 is a powerful one-channel dry contact smart switch, designed to control lights, appliances, and lower voltage devices with speed and reliability. With multi-protocol support including Wi-Fi, Zigbee, Bluetooth, and Matter certification, it integrates into modern smart homes and commercial setups.
Features:
- Multiprotocol: Wi-Fi, Zigbee, Bluetooth & Matter
- Works with Apple HomeKit, Alexa, Siri & Home Assistant
- Dry contacts (potential-free) for contactor or low-voltage control
- Supports both low and high voltage devices
- Compact retrofit design for installation behind switches & sockets
- Supports schedules, scenes & local actions
- HTTPS, MQTTS, scripting & WebSocket support
- Virtual components & KNXnet/IP communication
- Internal temperature sensor for overheating protection
- No hub required – control via Shelly Smart Control app or automation platforms
Perfect for upgrading homes, offices, and businesses to the latest generation of reliable, flexible automation.
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Quantity |
Value |
|---|---|
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Physical |
|
|
Size (HxWxD): |
37x42x16 mm / 1.46x1.65x0.63 inch |
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Weight: |
26 g / 0.92 oz |
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Screw terminals max torque: |
0.4 Nm / 3.5 lbin |
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Conductor cross section: |
0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules) |
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Conductor stripped length: |
6 to 7 mm / 0.24 to 0.28 in |
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Mounting: |
Wall console |
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Shell material: |
Plastic |
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Shell color: |
Blue |
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Terminals color: |
Grey |
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Environmental |
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Ambient working temperature: |
-20 °C to 40 °C / -5 °F to 105 °F |
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Humidity: |
30 % to 70 % RH |
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Max. altitude: |
2000 m / 6562 ft |
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Electrical |
|
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Power supply: |
110-240 V~ 24-48 V⎓ 12 V⎓ |
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Power consumption: |
< 1 W |
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Neutral not needed: |
No |
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External protection: |
Cable protection switch in accordance with EN60898-1 (tripping characteristic B or C, max. 16 A rated current, min. 6 kA interrupting rating, energy limiting class 3) |
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Output circuits ratings |
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Max. switching voltage: |
240 V~ 30 V⎓ |
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Max. switching current: |
16 A/240 V~ 10 A/30 V⎓ |
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Sensors, meters |
|
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Internal-temperature sensor: |
Yes |
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Radio |
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Wi-Fi |
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Protocol: |
802.11 b/g/n/ax |
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RF band: |
2412 - 2472 МHz |
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Max. RF power: |
< 20 dBm |
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Range: |
Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors |
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Bluetooth |
|
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Protocol: |
5 |
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RF band: |
2402 - 2480 MHz |
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Max. RF power: |
< 4 dBm |
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Range: |
Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors |
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Zigbee |
|
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Protocol: |
802.15.4 |
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Zigbee repeater: |
Yes |
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RF bands: |
2400 to 2483.5 MHz |
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Max. RF power: |
< 20 dBm |
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Range: |
Up to 100 m / 328 ft indoors and 300 meters / 984 ft outdoors |
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Microcontroller unit |
|
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CPU: |
ESP-Shelly-C68F |
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Flash: |
8MB |
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Firmware capabilities |
|
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Schedules: |
20 |
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Webhooks (URL actions): |
20 with 5 URLs per hook |
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Scripting: |
Yes |
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MQTT: |
Yes |
