The small, smart sensor for recording temperature and humidity values. - Measurement of temperature and humidity values - Constant monitoring of air humidity - Direct information about temperature fluctuations - Transmission of measured values Shelly products are compatible with Amazon Alexa, Google Home. This makes all devices controllable with voice commands. - Radio/WiFi protocol: 802.11 b/g/n - WiFi frequency: 2400 - 2500 MHz - Security: WEP/WPA-PSK/WPA2-PSK - Compatibility: Amazon Echo, Google Home - Range: up to 50 m (open field) and 30 m (indoor area) - Humidity measurement: 0-100% (+/- 5%) - Power consumption: 3V <250mA - Standby power consumption <70 uA - Operating temperature: -20°C to 50°C - Temperature measurement: 0°C to 60°C ( ± 1°C) - Battery life: Up to 18 months - Requires a CR123A battery (not included)