EM-2

What is the CSignum EM-2?

A wireless communication link that overcomes the limitations of acoustic, optical and cabled underwater communications, to transmit data reliably through the water-air barrier, from beneath the surface to shore or riverbank including through ice or from an underground location to the topside, in real time. Only EM-2 technology uses electromagnetic fields to carry data, without the use of cables, from beneath the surface to topside devices which can be mounted on the shore or on piles, buoys, or structures such as wind turbines or bridges and positioned above, on, or below the water.