World's smallest Wi-Fi relay switch. Automate and control lights, garage, irrigation, and small appliances in under 10 mins. Equipped with Shelly chip & all Gen3 features.





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Physical |
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Size (HxWxD): |
29x34x16 ±0.5 mm / 1.34x1.11x0.63 ±0.02 in |
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Weight: |
19 ±1 g / 0.65 ±0.04 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 box |
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Shell material: |
Plastic |
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Shell color: |
Blue, C-95%; M-53%; Y-0%; K-0% |
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Terminal Color: |
Black |
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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 VAC |
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Relay: |
Dry, NO contact, 1-pole, µ contact |
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Power consumption: |
< 1.2 W |
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External protection: |
Tripping characteristic B or C, |
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Output circuits ratings |
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Max. switching voltage: |
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Max. switching current: |
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Max. output power: |
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Voltage protection / Cutoff: |
No |
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Current protection / Cutoff: |
No |
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Max power protection / Cutoff: |
No |
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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 |
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RF band: |
2401 - 2495 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: |
4.2 |
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RF band: |
2400 - 2483.5 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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Microcontroller unit |
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CPU: |
ESP-Shelly-C38F |
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Flash: |
8 MB |
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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 |
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UDP: |
Yes |
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Advanced schedules: |
Yes |
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KVS (Key-Value Store): |
Yes |