... used on M2M fields, such as intelligent transportation, smart grid, industrial automation, telemetry, finance, POS, water supply, environment protection, ... "WAN", "WLAN"AntennaCellular: Standard SMA female interface, 50 ohm, lighting protection(optional)WIFI: Standard SMA male interface, 50 ohm ... )GPS: Standard SMA female interface, 50 ohm, lighting protection(optional)SIM/UIMStandard 3V/1.8V user card ...