Downlink: Modbus RTU/TCP Master and Air conditioning protocols, compatible with legacy industrial devices (PLCs/sensors).
Uplink: Modbus RTU/TCP Slave protocols, seamless integration with SCADA/cloud platforms.
Transparent Transmission: Bidirectional protocol conversion (RTU↔TCP), breaking communication barriers.
Comprehensive Interfaces
Dual Ethernet: 1×WAN + 1×LAN (10/100M auto-adapting), supports switch cascading.
Dual Serial Ports: 2×RS485/RS232 (configurable), 2400-115200bps wide baud rate.
Dual USB: 1×Program download + 1×Debug port (Micro USB OTG).
4G/WiFi Optional: Auto-failover (wired → 4G) ensures uninterrupted data flow.
Smart O&M
Remote Control: Configuration updates, firmware upgrades, real-time monitoring (temperature/memory/signal strength).
Dual Watchdog: Hardware + software protection, auto-reboot upon system freeze.
Factory Reset: Long-press RESET button (activated when RUN light extinguishes).
Smart Buildings: Air conditioning status monitoring.
Power Monitoring: Remote diagnostics & early warning for substation equipment.
HVAC Monitoring: Real-time monitoring of HVAC system status.
| 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 |
|
| SIM Card Slot | QTY | 1 |
| Specification | Drawer type, support 1.8V/3V SIM/UIM card(NANO) | |
| Protection | Built-in 15KV ESD protection | |
| USB Port | QTY | 1xMini USB |
| Protection | Over current protection | |
| 4G (Optional) |
Antenna QTY | 1 |
| Antenna Type | SMA Hole | |
| GPS (Optional) |
Antenna QTY | 1 |
| Antenna Type | SMA Hole | |
| Tracking Sensitivity | > -148 dBm | |
| Flat Position Precision | 2.5m | |
| Protocol | NMEA-0183 V2.3 | |
| 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 | WAN | LAN | COM(RS485) (Optional RS232) |
WiFi | 4G | GPS |
| BL120AC | 1 | 1 | 2 | × | × | × |
| BL120ACL | 1 | 1 | 2 | × | √ | × |
| BL120ACLG | 1 | 1 | 2 | × | √ | √ |
| BL120ACW | 1 | 1 | 2 | √ | × | × |
| BL120ACP | 1 | 1 | 6 | × | × | × |
| BL120ACPL | 1 | 1 | 6 | × | √ | × |
| BL120ACPLG | 1 | 1 | 6 | × | √ | √ |
| BL120ACPW | 1 | 1 | 6 | √ | × | × |
