The FS-ROUTER-BAC has two RS-485 ports enabling up to 64 BACnet MS/TP devices to be connected to it without the use of additional line drivers. Relative to a single port router, the dual port router halves device response time by distributing devices over the two RS-485 ports.

| Configuration | BACnet-MS/TP; BACnet-IP |
| Category | Router |
| Manufacturer | Sierra Monitor |
| Bus | BACnet-MS/TP; BACnet-IP |
| Power Requirements | 9-30 VDC or 12-24 VAC |
| Temperature | -40 ... +75°C |