Features 1、For MIPS MCU (32MB for SRAM) and 16MB Flash, based for Linux operating system. 2、Support for TCP / for IP / for Telnet / for Modbus TCP protocol 3、Support RS485 to 10 / 100M Ethernet data transmission, the maximum serial port speed is 460800 bps 4、Support 10 / 100M Ethernet adaptive 5、Support for webpage mode, for IOTService PC software easy configuration 6、Support data for TLS / for AES / for DES3 security encryption configuration 7、Support for registration and for Heart Beat function 8、Support for web / for IOTService OTA wireless upgrade Specification Item Type: Serial Port Server Model: HF7121 Function Explanation: Serial to Ethernet Core Resources: Processor: for Cortex-M3 Frequency: 96MHz Operating System: FreeRTOS FLASH Resources: 2MB RAM: 128KB Network Interface Parameters: Ethernet Standard: 802.3 Ethernet Interface Form: 1 RJ45 with LED Interface Standard: 10 / 100Base-T auto-negotiation Network Protocols: IP.TCP.UDP, DHCP, DNS, HTTPServer / Client, APP.BOOTP.AutoIP, ICMP, Telnet.uPNP Security Protocol (data Communication): for TLSv1.2.for AES-128Bit, for DES3, for SSL Network Port Protection: 2KV electromagnetic isolation Network Transformer: Integrated Maximum Number Of Connections: 3socket Serial interface parameters Number Of Serial Ports: 1 Interface Standard: RS485 Baud Rate: 2400-460800bps Serial Port Protection: Yes Product Features: Configuration Method: for WEB page, for CLI command, for XML file import, for Telnet configuration, for IOTService software WEB Page: Standard web page or custom web page IP Acquisition Method: DHCP or static IP, AutoP support Virtual Data Channel: Support Firmware Upgrade: Web page, IOTService software Registration Function: Support Heart Beat Function: Support Custom Script Function: Support Packet Filtering: Support Automatic Serial Framing: Support For ModbusRTU for Modbus TCP: Support NTP Function + Time Zone Setting: Support Parameter Import And Export: Support Reload Reset Interface: None Environmental Parameters: Working Temperature: -45-85 ℃ Storage Environment: -50-90 ° C, 5-95% RH (non-condensing) Power Parameters: Interface Form: RJ45 interface Power Protection: Yes Package List 1 x Serial Server 1 x Custom Network Cable 1 x Housing Fixing Bracket 1 x Rail Bracket 2 x Screw