Phoenix Contact 2702877 The Radioline - 900 MHz wireless transceiver is a device that enables wireless communication over long distances, with six built-in input/output channels, a weatherproof NEMA 4X enclosure, and the ability to connect using an omnidirectional antenna or a point-to-point connection, supporting up to 250 stations in various network configurations including mesh networks, covering ranges of up to 32 km (line of sight), suitable for use in North America.