BL121BN Series · 2 or 6 serial ports · Collects BACnet/IP, BACnet MS/TP building devices · Outputs OPC UA to SCADA/IIoT/Enterprise
Choose BL121BN for small to medium building automation projects, or BL121BNP for large‑scale facility integration. Both support optional WiFi.
| Feature | BL121BN (Standard) | BL121BNP (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 Protocol | OPC UA | OPC UA |
| WiFi (Optional) | ✓ 802.11a/b/g/n | ✓ 802.11a/b/g/n |
| 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 Facility Integration |
Engineered for building automation integration with seamless BACnet to OPC UA conversion and standardized data access.
Collects data from BACnet/IP and BACnet MS/TP building devices — outputs to OPC UA for standardized building data access.
OPC UA provides secure, platform‑independent, and standardized data access — seamless integration with BMS, SCADA, and enterprise systems.
Bridge distributed BACnet devices to OPC UA platforms — enabling centralized monitoring, control, and analytics across buildings.
Optional WiFi for flexible network deployment — ideal for locations where wired Ethernet is unavailable or impractical.
9–36V DC wide input, reverse‑polarity protection, -40~85°C operation, EMC Level 3 (ESD/EFT/Surge), 2KV isolation.
DIN35 rail or wall mounting with patented rail‑clip — quick installation in electrical panels, mechanical rooms, and equipment enclosures.
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.
Bridge BACnet HVAC, lighting, and access control systems to OPC UA BMS and SCADA — enable real‑time building monitoring and control.
Monitor building energy consumption, HVAC performance, and lighting data via OPC UA for energy optimization and sustainability reporting.
Connect building systems to OPC UA‑based IIoT platforms — unlock data for predictive maintenance and digital twin applications.
Deploy OPC UA servers at remote sites via WiFi — centralize building data from distributed locations into a single OPC UA client.
