HF2221A

  • Product Code: HF2221A
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Product Overview

  • The HF2221A serial port server provides a solution for protocol conversion between two RS232/RS485/RS422 and Wi Fi/Ethernet channels, meeting the needs of industrial product serial ports to wireless or Ethernet data transmission channels. This product integrates Ethernet hardware protocols such as MAC, TCP/IP protocol stack, memory management, 10/100M Ethernet transceiver, high-speed serial port, RS232, RS485, RS422 and other rich hardware interfaces. Based on the ECos operating system, the product includes a web page for convenient remote configuration, monitoring and debugging. The hardware interface meets the national standard requirements, and ESD supports air discharge ± 15KV and contact discharge ± 8KV.
  • The HF2221A serial server adopts a highly integrated hardware and software platform, which has been optimized for industrial applications, smart grids, personal health and medical applications. Only adding one HF2221A product can meet the needs of device data monitoring and transmission.

Product Features

  • Using MIPS MCU (8MB SRAM) and 4MB Flash, based on eCos operating system
  • Supports TCP/IP/Telnet/Modbus TCP protocols
  • Supports 2-channel RS232/RS422/RS485 to Wi Fi/Ethernet data transmission, with a maximum serial port speed of 230400 bps
  • Support wireless work STA/AP/AP+STA
  • Supports routing/bridging mode network architecture and supports 2 Ethernet interfaces
  • Support web page mode and easy configuration of PC software
  • Support TLS/AES/DES3 secure encryption configuration for data
  • Support web OTA wireless upgrade
  • Wide voltage supply of 5-36VDC
  • Size: 108mm x 146mm x 25mm


2 Serial Port HF2221A Achieve RS232/RS485/RS422 to WIFI/Ethernet two-way transparent transmission

WIFI Serial Server







Processor MIPS
Basic Frequency 320MHz
Flash 4MB
SDRAM 8MB
Operating System eCos
Ethernet
Interface Standard 2 RJ45
Rate 10/100 Base-T Auto-Negotiation
Protection 8KV Isolation
Network Protocol IP，TCP，UDP，DHCP，DNS，HTTP Server/Client，ARP，BOOTP，AutoIP， ICMP，Web socket，Telnet，FTP，TFTP，uPNP，NTP，SNMP，Modbus TCP
Security Protocol TLS v1.2 AES 128Bit DES3
WIFI
Standard 802.11 b/g/n
Network Mode STA/AP/STA+AP
Access Terminal Quantity in AP Mode 最多32个终端
Transmit Power 802.11b: +20dBm(Max.) 802.11g: +18dBm(Max.) 802.11n: +15dBm(Max.)
Receive Sensitivity 802.11b: -89dBm 802.11g: -81dBm 802.11n: -71dBm
Wi-Fi Security WEP/WPAPSK/WPA2PSK
Antenna Interface External：3dBi antenna
Port Number 2(RS232/RS485/RS422)
Interface Standard RS232: DB9 RS485/RS422: 5.08mm connector
Data Bits 8
Stop Bit 1，2
Check Bit None，Even，Odd
Baud Rate TTL: 300 bps~230400bps
Flow Control No Flow control Hardware RTS/CTS、DSR/DTR Software Xon/ Xoff flow control
Buffer 4K
Configuration Web,CLI,XML import,Telnet,IOTManagerPC Software
Virtual Serial Windows, XP/Vista, 7， Server 2003/2008
Size 108mmx 146mm x 25mm
Operating Temp. -45 ~ 85°C
Storage Temp. -45 ~ 105°C，5 ~ 95% RH（No Condensation）
Input Voltage 5～36VDC
Working Current ~200mA
Power <700mW
Warranty 1 years
Accessory 1* Power Adapter 1* Serial Cable 1* Ethernet Cable 1* WiFi Antenna
User Guide
IOT_Device_Series_Software_Funtion_20250328 [ Download Times: 56211,  Date Update: 2025-11-06 15:45:30 ]
PW2XA_HF2211A_HF2221A_HF9610A Operation Guide 20210817 [ Download Times: 402,  Date Update: 2023-05-10 14:42:13 ]
HF2221 User ManualV1.0(20251224) [ Download Times: 100,  Date Update: 2025-12-25 10:01:09 ]