BL120BN Series · 2 or 6 serial ports · Downlink: BACnet/IP, BACnet MS/TP · Uplink: Modbus RTU, Modbus TCP
Choose BL120BN for small to medium BACnet integration projects, or BL120BNP for large‑scale building automation system integration. Both support optional 4G, WiFi, and GPS modules.
| Feature | BL120BN (Standard) | BL120BNP (High‑Performance) |
|---|---|---|
| Serial Channels | 2 × RS485/RS232 | 6 × RS485/RS232 |
| Max. BACnet Devices | 10 | 50 |
| Data Points | 512 | 4,000 |
| Downlink Protocols | BACnet/IP · BACnet MS/TP | BACnet/IP · BACnet MS/TP |
| Uplink Protocols | Modbus RTU · Modbus TCP | Modbus RTU · Modbus TCP |
| 4G (Optional) | ✓ L‑E / L‑CE / L‑A / L‑AU / L‑AF / CAT‑1 | ✓ L‑E / L‑CE / L‑A / L‑AU / L‑AF / CAT‑1 |
| WiFi (Optional) | ✓ 802.11a/b/g/n | ✓ 802.11a/b/g/n |
| GPS (Optional) | ✓ NMEA‑0183 | ✓ NMEA‑0183 |
| Dimensions (L×W×H) | 30 × 83 × 110 mm | 40 × 83 × 110 mm |
| Weight | 133 g | 171 g |
| Best Fit | Small / Medium BAS Projects | Large‑Scale BAS Integration |
Engineered for building automation integration with seamless BACnet to Modbus connectivity and industrial reliability.
Collect data from BACnet/IP and BACnet MS/TP devices — output to Modbus RTU and Modbus TCP. Bridge BAS networks to Modbus SCADA.
Downlink BACnet/IP and BACnet MS/TP — uplink Modbus RTU and Modbus TCP. Seamless integration between BACnet and Modbus.
Replace multiple protocol gateways with a single unified gateway — reduce hardware costs, cabling complexity, and maintenance overhead.
4G, WiFi, or Ethernet with wired priority and automatic 4G failover — always online. Optional GPS for asset tracking.
9–36V DC wide input, reverse‑polarity protection, -40~85°C operation, EMC Level 3 (ESD/EFT/Surge), 2KV isolation.
Supports Modbus RTU to Modbus TCP, Modbus TCP to Modbus RTU, and transparent transmission for flexible integration.
Click a tab below for detailed module parameters. Both models share the same core platform.
Designed for building system integrators, facility managers, and BAS engineers.
Connect BACnet HVAC, lighting, and access control systems to Modbus SCADA for centralized building monitoring and control.
Bridge existing BACnet networks to modern Modbus SCADA platforms without replacing existing building automation infrastructure.
Monitor BACnet building data — temperature, airflow, lighting levels — output to Modbus energy management systems for optimization.
Monitor BACnet devices across multiple buildings via 4G or WiFi — ideal for campuses, retail chains, and multi‑site portfolios.
