The B450 Conettix Plug-in Communicator Interface is a four-wire powered SDI2, SDI, or option bus device that provides two-way communication with compatible control panels over commercial cellular networks using a plug-in communicator (available separately).Use B450 in combination with a plug-in communicator for primary or backup alarm communication, remote panel programming and other remote applications. The B450 supports Conettix IP protocol with full authentication, 256 bit AES encryption and resistance to Denial of Service attacks. It is a reliable way to add cellular network communications to existing or new commercial security and fire installations.