Communication Mode: Wi-Fi 802.11 b/g/n (2.4GHz) Operating Related Humidity:≤ 85% Operating Temperature:0°C~50°C Power Consumption:≤ 1.6W Sensors: Noise, temperature, humidity, illumination, VOC Power Supply: 100-250V AC 50/60Hz Operating Indicator:1 x Working LED, 1 x Wi-Fi LED Adaptor types: UK