Feature: 1. Made of high quality material, MIPS MCU with 4MB flash memory and 8MB SRAM can run on for eCos 2. The RS485 to WIFI serial server can support TCP / UDP / MQTT / HTTP / WebSocket protocol 3. Support RS485 to Ethernet/Wi‑Fi conversion, the serial speed can be up to 230400 bps 4. Support STA / AP / AP + STA mode and router or bridge network working mode 5. Support TLS/AES/DES3 and other security protocols and Web OTA wireless upgrade 6. Support easy configuration via web interface or PC IOTService tool, support 10/100M Ethernet auto‑negotiation Specification: Item Type: RS485 to WIFI Serial Server Model: PW21-M Input Voltage: 9-50VDC Power: 10W Processor/Frequency: For MIPS/320MHz Flash/SDRAM: 4MB/8MB Operating System: For ECos Ethernet Port: Port Number: 1 RJ45, 1 WAN / LAN switchable Interface Standard: 10/100 Base-T auto-negotiation Protection: 8KV isolation Transformer Integration: Network Protocol: IP, TCP, UDP, DHCP, DNS, HTTP server/client, ARP, BOOTP, AutoIP, ICMP, Web socket, Telnet, uPNP, NTP Security Protocol: TLS v1.2 AES 128 bit DES3 Wi-Fi Interface: Standard: 802.11 b / g / n Frequency: 2.412GHz-2.484GHz Network Mode: STA / AP / STA + AP Security: WEP / WPAPSK / WPA2PSK Encryption: WEP64 / WEP128 / TKIP / AES Transmitting Power: 802.11b: +20dBm (maximum) 802.11g: +18dBm (maximum) 802.11n: +15dBm (maximum) Rx Sensitive 802.11b: -89dBm 802.11g: -81dBm 802.11n: -71dBm. Package List: 1 x Server1 x Antenna1 x English User Manual Note: The input voltage is within the range of 9‑50VDC, and the product may be burnt if the voltage exceeds the value.