The HF2211 is a versatile serial-to-Ethernet/Wi-Fi converter (also known as a serial device server or DTU) designed for industrial communication applications. It supports RS-232, RS-422, and RS-485 serial interfaces and enables seamless data transmission over TCP/IP networks or Wi-Fi.

Key Features:

• Processor & Memory: MIPS MCU running at 320 MHz with 4 MB Flash and 8 MB SRAM, using the eCos real-time OS

• Protocols Supported: TCP/IP, Telnet, Modbus TCP, DHCP, DNS, HTTP server/client, FTP/TFTP, uPNP, FTP, SNMP, NTP, WebSocket.

• Serial Interface: One port for RS-232 (DB9) or RS-422/RS-485 via 5.08 mm terminal block; up to 460,800 bps serial speed.

• Network & Modes: 10/100 Mbps Ethernet (auto negotiation); Wi-Fi 802.11 b/g/n, supporting STA, AP, and STA+AP modes.

• Security: SSLv3, AES 128-bit encryption, DES3; WEP/WPA-PSK/WPA2-PSK for Wi-Fi.

• Additional Support: Router or bridge operation modes, OTA firmware upgrade via web, easy configuration through web interface or PC software.

• Power Input: Wide-range DC input from 5–36 VDC or 9–50 VDC.

• Certifications: FCC, CE, RoHS, SRRC compliant.

• Form Factor: Compact design (~95 × 65 × 25 mm)

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