| Bluetooth |
| Protocol (Bluetooth) | BLE 4.2 |
| RF band (Bluetooth) | 2402 - 2480 MHz |
| Max. RF power (Bluetooth) | < 10 dBm |
| Range (Bluetooth) | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors , (Depends on local conditions) |
| Electrical |
| Power supply | 5 V⎓ (from USB Type-A port) |
| Power consumption | < 1 W (up to 5 W peak) |
| Environmental |
| Ambient working temperature | -20 °C to 40 °C / -5 °F to 105 °F |
| Storage temperature | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity | 30 % to 70 % RH |
| Max. altitude | 2000 m / 6562 ft |
| Firmware capabilities |
| Schedules | 20 |
| Webhooks (URL actions) | 20 with 5 URLs per hook |
| Scripting | |
| MQTT | |
| Encryption | |
| Microcontroller unit |
| CPU | Shelly ESP32 C3 |
| Flash | 8 MB |
| Physical |
| Size (HxWxD) | 60x27x11 mm / 2.36x1.06x0.43 in |
| Weight | 10 g / 0.35 oz |
| Shell material | Plastic |
| Shell color | White |
| Sensors, meters |
| Internal-temperature sensor | |
| Wi-Fi |
| Protocol | 802.11 b/g/n |
| RF band | 2401 - 2483 МHz |
| Max. RF power | < 20 dBm |
| Range | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors , (Depends on local conditions) |