... .RF, 2402MHz-2480MHz 2.RF operation channel, 16,automatic frequnency hopping 3.Rated voltage, 1.5V/3.0V 4.Rated current, 12 ... 7/MAC operation system2.One USB available port.Product feature1.2.4GHz digital wireless transmission,operation distance is up to 10 meters ... life of one alkaline battery is up to six months 4.Intelligent connectivity,no need to code,plug-and-play.5 ...