... intelligent power conversion, liquid crystal display, large air circulation, on the smoke and various odors, formaldehyde, toluene and other ... green (good air) level, the delay the work of 5 minutes, automatically shut down.3: large solar power system and DC12V, ... 8: Technical parameters: Power requirements: polymer lithium battery solar 5V600mA 3.8V1500 mA DC12V AC220V Suitable temperature: -20 °C - + ...