... , high-power solar power systems and DC12V, AC220V three intelligent power conversion, liquid crystal display, large air circulation ... effective protection for your health. 2: LCD liquid crystal display temperature, humidity, air quality levels, three backlight: green, ... 8: Technical parameters: Power requirements: polymer lithium battery solar 5V600mA 3.8V1500 mA DC12V AC220V Suitable temperature: -20 ...