The Hughes Model 9502 12/24v BGAN M2M External Antenna Terminal/Modem is a high-quality antenna designed for use with Hughes brand modem devices. This external antenna is compatible with 12/24v systems and is specifically tailored for M2M (machine-to-machine) communication. With its reliable performance and specific design, this antenna ensures a strong and stable connection for your modem device, allowing for efficient and reliable data transmission.