BUSABLE RADIOA busable 900 MHz radio, RAD-ISM-900-EN-BUS, allows direct connection of I/O modules. The radio includes a multiple master function to create redundancy and wireless failover connections if a master or host radio is not accessible. The radio allows the user to collect I/O without a remotely located PLC or I/O data concentrator. The bused I/O is made accessible to the network using the Modbus protocol and can be integrated into new or existing PLC, SCADA or DCS systems.Phoenix Contact800/322-3225