BL120AC Series · 2 or 6 serial ports · Collects Modbus RTU/TCP air conditioning units · Outputs Modbus RTU/TCP to BMS/SCADA
Choose BL120AC for small to medium HVAC projects, or BL120ACP for large‑scale air conditioning system integration. Both support optional 4G, WiFi, and GPS modules.
| Feature | BL120AC (Standard) | BL120ACP (High‑Performance) |
|---|---|---|
| Serial Channels | 2 × RS485/RS232 | 6 × RS485/RS232 |
| Max. AC Units | 10 | 50 |
| Data Points | 512 | 4,000 |
| Downlink Protocols | Modbus RTU Master · Modbus TCP Master | Modbus RTU Master · Modbus TCP Master |
| 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 HVAC Projects | Large‑Scale AC System Integration |
Engineered for air conditioning system integration with seamless Modbus connectivity and industrial reliability.
Collects operating data from Modbus RTU and Modbus TCP air conditioning units — temperature, pressure, fan speed, valve position, and fault status.
Downlink Modbus RTU Master and Modbus TCP Master — uplink Modbus RTU and Modbus TCP. Seamless integration with any Modbus‑compatible BMS or SCADA.
Replace multiple AC 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 HVAC contractors.
Collect data from chillers, AHUs, FCUs, and VRF systems via Modbus RTU/TCP and integrate into BMS for centralized monitoring and control.
Monitor AC unit energy consumption, temperature setpoints, and operating modes for energy optimization and demand response.
Upgrade legacy air conditioning systems with Modbus connectivity to modern BMS/SCADA platforms without replacing existing equipment.
Monitor distributed AC units across multiple sites via 4G or WiFi — ideal for retail chains, schools, and multi‑building campuses.
