Radio antenna module (receiver and transmitter) with USB interface for operation on a SafeIV server with the GFVS 4.0 radio visualization and control software. Included in the SafeIV delivery. USB connector type A with 1m connection cable. SMA socket for the enclosed small antenna. When connecting a larger FA250 or FA200 radio antenna in an optimized position, the transmission and reception range is significantly increased. The connection of an external high-performance FA200 receiving antenna is only permitted if radio signals are only received and not also sent. Housing dimensions LxWxH: 78x40x22mm.