Air Conditioning to OPC UA Protocol Translator BL121AC
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway

Air Conditioning to OPC UA Protocol Translator BL121AC

No.BL121AC
BL121AC protocol translator supports Air Conditioning Protocols converting to OPC UA protocol. This protocol translator is used for industrial air conditioning and control system communication.
Communication
Ethernet, WiFi
Downlink Protocol
Air Conditioning Protocols
Uplink Protocol
OPC UA
Serial Port
2CH or 6CH RS485/RS232
Baud Rate
2400bps-115200bps
Ethernet Port
1 WAN + 1 LAN
Description
The BL121AC is a protocol translator with Ethernet ports and RS-232/485 serial ports. Beilai BL121AC protocol translator supports Air Conditioning Protocols converting to OPC UA protocol. This protocol translator is used for industrial air conditioning and control system communication.

Key Features

Bidirectional Downlink Compatibility

  • Supports Modbus RTU/TCP Master for seamless PLC/sensor integration.
  • Connects 10/50 devices and collects 512/4000 data points (ideal for medium-scale systems).

Cloud Platform Integration

  • Uplink via OPC UA for secure cloud/SCADA data transmission.

Flexible Networking

  • Dual Ethernet ports: 1×WAN + 1×LAN (supports cascaded switches).
  • WiFi model available (BL121ACW): Dual-band 802.11a/b/g/n, 20m outdoor coverage.

Industrial Hardware

  • ARM MCU @300MHz + Linux OS for stable edge computing.
  • 128MB RAM + 64MB Flash for efficient data buffering.


Typical Applications

Unattended computer room: Environmental system monitoring connection temperature and humidity sensor + air conditioning controller
Smart Building: Monitoring of HVAC, lighting, elevator and other systems to solve energy waste and lack of unified control


Technical Specifications

Parameter Description
System Processor Clock speed 300Mhz
Storage 128MB
Flash Memory 64MB
Power Supply Input Voltage DC 9~36V 
Power Consumption Normal: 70mA@12V, Max: 168mA@12V
Wiring Anti-reverse connection protection
Ethernet Port Specification 2 x RJ45, 10/100Mbps, adaptive MDI/MDIX
Protection ESD: ±6kV(Contact), ±8kV(Air)
EFT: 1kV, 5kHz
Serial Port QTY 2CH or 6CH RS485/RS232
Baud Rate 2400bps-115200bps
Data Bit 7,8
Parity Bit None, Even, Odd
Stop Bit 1, 2
Protection ESD: ±6kV(Contact), ±8kV(Air)
SURGE  ±1kV, 8/20us
EFT: 1kV, 5kHz
USB Port QTY 1xMini USB
Protection Over current protection
WiFi
(Optional)
QTY 1
Type SMA
Protocol 802.11a/b/g/n (mixed)
Mode Client Mode
Channel 2.4G Channel 1 - 13,5G Channel 36 - 165
Security Security
Encrypted AES, TKIP, TKIPAES
Speed 150Mbps (Max)
Distance Unobstructed/open outdoor coverage up to 20 meters
SSID broadcast switch Support
Indicator PWR Always on when device powered on 
RUN Flickering when system running
Off when system shutdown
LINK Flickering when Ethernet communication; Always on when 4G or WiFi communication; OFF when Ethernet, 4G, WiFi are all disconnected.
Software Internet Protocol IPV4, TCP/UDP, DHCP, DNS, etc
IP Retrieving Static IP/DHCP
Transparent Transmission Support
DNS Support Domain Name resolution
Configuration PC software configuration, support WIN 7, WIN 8, WIN 10 and WIN11
Network Cache Transmitting: 8Kbyte; Receiving: 8Kbyte
Safety Regulations EMC CE, FCC
EMS IEC 61000-4-2 (ESD) Level 3
IEC 61000-4-4 (EFT) Level 3
IEC 61000-4-5 (Surge)Level 3
Vibration IEC60068-2-6
Environment Working -40~85℃, 5~95% RH
Storage -40~85℃,5~95% RH
Others Housing Material Plastic
Size 40×83×110mm/30×83×110mm (LxWxH)
Protection  IP30
Net Weight 171g/133g
Mounting DIN Rail Mounting/Wall-mounting
  •  
  • Model Selection
Model WAN LAN COM(RS485)
(Optional RS232)
WiFi 4G GPS
BL121AC 1 1 2 × × ×
BL121ACW 1 1 2 × ×
BL121ACP 1 1 6 × × ×
BL121ACPW 1 1 6 × ×

  • Shipping Packaging
  • Industrial-grade Gateway x1
  • DIN35 mounting bracket x1
  • Connection Terminalsx1
  • WiFi antenna x1 (Optional)
  • Certificate of conformity x1
  • Warranty card x1
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway
  • Air Conditioning to OPC UA Gateway

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