selling car air purifier

Using method: It should be connected with DC12V power supplier, as the power supplier indicated light with letter of Smoking Lighter In Car is on, turn on the switch, it starts recycle working when the working indicated light is on. Way of working Smart micro computer work automatically, it start recycle working after 10mins of continued work(it stops working after 10mins’working and start to work another 10min after 10min’s rest, that is recycle working)