WiFi Serial Device Server RS232/RS485/RS422 Serial Port to WiFi Ethernet Converter Module HF2211 HF2211A EU plug available

what's the difference：

HF2211A is a serial RS232/RS485/RS422 to WiFi/Ethernet server

Introduction
HF2211A is a serial RS232/RS485/RS422 to WiFi/Ethernet server,used for data transparent transmission.HF2211 is a low-cost serial device server,which function is to realize bidirectional transparent transmission between RS232/RS485/RS422 and WiFi/Ethernet.

Overviewof Characteristic
MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos
Support TCP/IP/Telnet /Modbus TCPProtocol
Support RS232/RS422/RS485 to Ethernet/Wi-Fi Conversion, Serial Speed Upto 460800 bps
Support STA/AP/AP+STA Mode
Support Router or Bridge Network Working Mode.
Support 10/100M Ethernet Auto-Negotiation
Support Easy ConfigurationThrougha Web Interface or PC IOTManager Tool
Support Security ProtocolSuch AsSSL/AES/DES3
Support Web OTA Wirelss Upgrade
Wide DC Input 5~36VDC or 9~50VDC
Size: 95 x65x 25 mm(Lx W x H)
FCC/CE/RoHS Certificated
System info
Processor MIPS Basic Frequency 320MHz
Flash &SDRAM :4MB *8MB
Operating System:eCos
Ethernet Interface Standard 1 RJ45 Rate 10/100M
Protection:8KV Isolation
Port Number 1RS232/RS485/RS422
Interface Standard RS232: DB9 RS485/RS422: 5.08mm connector
Baud Rate TTL: 600 bps~460800bps
Operating Temp. -25 ~ 85°C Storage Temp. -45 ~ 105°C，5 ~ 95% RH（no condensation）
Input Voltage 5~36VDC or 9~50VDC
Working Current ~200mA Power <700mW
Accessory 1* Power Adapter 1* Serial Cable 1* Ethernet Cable 1* WiFi Antenna