The WilsonPro 4000R is the first rack mounted, multi-amplifier cell booster to incorporate four separate signal amplifiers feeding multiple indoor antennas. Designed to provide enhanced in-building cellular coverage for all commercial spaces, including hospitals, hotels, warehouses and offices, the WilsonPro 4000R amplifies weak cell signals to provide reliable voice and data coverage including 4G - to inside spaces where signals may not penetrate. Like all WilsonPro cellular signal boosters, the WilsonPro 4000R features cell site protections that auto-detect and prevent any cell tower interference.