Specification: Item Type: HF-2211 Serial Port Server Model: HF-2211 Input Voltage: Wide voltage 5 ? 36VDC Size: Approx. 95 x 65 x 25mm / 3.7 x 2.6 x 1in Working Temperature: -45-85 ? Interface Form: ?5.5 x 2.1mm socket and 5.08mm terminal block Working Current: 200mA Power Consumption: <700mW Core Resources: Operating System: For Ecos FLASH Resources: 4MB RAM: 8MB Ethernet Interface Parameters: Ethernet Interface Form: 1 RJ45 Interface Standard: 10/100 Base-T auto-negotiation Serial Interface Parameters: Number Of Serial Ports: 1 (RS232 / 485/422) Interface Standard: RS232: DB9 pin type RS485 / RS422: 5.08mm terminal block Baud Rate: 600-230400bps Data Bits: 8 Stop Bits: 1, 2 Parity: None, Even, Odd, Space, Mark Wi-Fi Wireless Interface Parameters: Wireless Standard: 802.11 b / g / n Network Mode: for STA / for AP / for STA + AP Network Protocol: For TCP / for UDP, etc. Maximum Number Of Connections: Maximum 15 STA Frequency Band: 2.412GHz-2.484GHz Network technical parameters Working Mode: TCP Server TCP Client UDP unicast UDP multicast UDP broadcast Maximum Number Of Network Connections: 20 IP Acquisition Method: DHCP or static IP, AutolP WEB Page: Standard web page or custom web page Failure Alarm: Syslog / SMTP Product Features: 4MB Package List: 1 x Serial Network Server 1 x Serial Cable 1 x Network Cable 1 x WIFI Rubber Antenna Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.