| Electrical |
| Power supply | 12 V (from compatible Shelly device) |
| Power consumption | < 0.5 W (without sensors) |
| Digital input | -15 V to 0.5 V (True) / 2.5 V to 15 V (False)* |
| Analog input range | 0 to 100% |
| Analog input report threshold | 1%** |
| Voltmeter range | 0 to 10 V |
| Voltmeter report threshold | 0.1 V** |
| Analog input / Voltmeter accuracy | Better than ±5% |
| Environmental |
| Ambient working temperature | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity | 30% to 70% RH |
| Max. altitude | 2000 m / 6562 ft |
| Microcontroller unit |
| CPU | STM32G071GBU6 |
| Compatible devices | Shelly Pro 1 Shelly Pro 1PM Shelly Pro 2 Shelly Pro 2PM Shelly Pro 3EM Shelly Pro Dimmer 0/1–10V PM Shelly Pro Dimmer 1PM Shelly Pro Dimmer 2PM Shelly Pro EM-50 |
| Others |
| Temperature reading accuracy | Depends on the DS18B20 or DHT22 sensors |
| Humidity reading accuracy | Depends on the DHT22 sensor |
| Output circuits ratings |
| VCC max. current | 10 mA |
| VREF max. current | 2 mA |
| VREF+R1 resistor | 10 kΩ |
| Max switching voltage | 30 V |
| Max switching current | 300 mA |
| Physical |
| Size (HxWxD) | 94x19x69 / 3.70x0.75x2.71 |
| Weight | 45 g / 1.59 oz |
| Mounting | DIN Rail |
| Conductor cross section | 0.2 to 0.5 mm² / 24 to 20 AWG |
| Conductor stripped length | 5 to 8 mm / 0.20 to 0.31 in |
| Shell material | Plastic |
| Shell color | Black |
| Connectors color | Black |