Industrial serial RS485 to HART master converter, housing type A (slim), DIN rail mount. The HD67900-A1 allow to monitor HART devices (like Sensors, etc..) with a Serial net (like a PC, etc..). On the HART side, the HD67900-A1 can manage up to 15 deivces (+1 Secondary Master). Specifications:Ports: 1xRS485; 1xHARTSerial protocol: RS485HART protocol: HART FSK Master + 4..20mA Analog InputData rates serial: Up to 115200bpsData rates HART: 1200bpsSe..