1. Industrialized design and connectivity Stable and reliable industrial design with a level of port protection Abundant LED status indicators to quickly locate the working status of the device Power supply options: supports terminal or DC header power, 828V DC wide voltage input, with reverse connection protection Interface options: supports terminal type RS485 and standard DB9 interface RS232 Isolated version provides 8channel serial ports with independent hardware isolation Ethernet interface: 10/100 Mbps 2. Configuration, control, and reliability Configuration methods: supports a configuration tool and AT command; two methods available Serial communication settings: baud rate 2400–115200 bps; parity options include odd, even, and none Network features: supports configurable domain name resolution service (DNS) System reliability: supports timeout restart function with configurable time (default 30 minutes) Connection management: supports short connection maintenance time Serial port management: supports serial port cache cleaning function 3. Modbus gateway capability and interoperability Networking capacity: supports multiple simultaneous open servers, each server supports up to 5 client connections Modbus integration: supports a variety of Modbus gateways to realize active reporting of RTU devices Protocol interoperation: supports Modbus TCP and Modbus RTU intertransfer Data collection modes: configurable as a storagetype mode to automatically collect device data Multihost operation: supports a questionandanswer multihost mode 4. Data reporting, gateway integration, and cloud access Data reporting: supports Modbus data active reporting TCP transparent transmission servers and MQTT servers HTTP client mode: uses HTTP/1.1 protocol and can be configured for GET or POST requests MQTT gateway: provides gateway function with fast access to AliCloud and standard MQTT 3.1.1 servers (OneNET, Baidu Cloud, Huawei Cloud, etc.)