... get great convenience . Name900/1800 & 850/1900 mhz Dual band booster DescriptionTechnical Features:*Receiving and sending separation,low require ... design with metal cavity filter technology inside.*Full-duplex&dual-port design,and built-in power supply,making it ... designed for the “blind zones” of offices, family rooms, underground,parking garage, cars, lifts, elevators, factories, bars,supermarkets, ...