M2M (machine to machine) product. Boosts 4G signals with the same award-winning technology from Wilson Electronics consumer signal boosters. Bi-directional amplifier enhances signal to and from the cell site. Comes with hardwire power supply kit. It works by pulling in the existing weak signal amplifying it multiple times with Wilson Electronics patented SmarTech III technology. The amplified signal bypasses all exterior and interior obstructions and interference directly from one machine to another.