AIS, AIS system, AIS receiver, marine AIS, AIS Transmitter, Class B AIS, Class A AIS, AIS products HUAYANG[Class B AIS]FEATURESGolden box AIS ... Antenna ( Optional )Female Type M Connector( Type N Connector optional )WIRELESS CONNECTIONBluetooth ( Optional )BIIT ALARM SYSTEMBIIT Message on display / Relay Alarm ... mm ( H )50mmSize in mm ( D )200mmWeight<1 Kg ClASS B AIS SYSTEM