Serial Port to Ethernet/Wi-Fi Module; With shielding cover; Prevent signal interference and protect circuit. - Technical Specifications: - Network standard: Wireless: IEEE 802.11n IEEE 802.11g IEEE 802.11b; Wired: IEEE 802.3 IEEE 802.3u - Wireless transmission rate: 11n: maximum up to 150Mbps; 11g: maximum up to 54Mbps; 11b: maximum up to 11Mbps - Tracks number: 1~14 - Frequency range: 2.4~2.4835GHz - Emission power: 12~15dBm - Antenna type: Onboard antenna / External antenna - Functional Parameters: - Wi-Fi work mode: Client / AP / Router - WDS Function: Supports WDS wireless bridge connection - Wireless security: Wireless MAC address filtering; Wireless security function switch; 64 / 128 / 152 bit WEP encryption; WPA-PSK / WPA2-PSKWPA / WPA2 security mechanism - Network management: Remote Web management; Configuration file import and export; WEB software upgrade - Serial to Network: - Maximum transmission rate: 230400bps - TCP connection: Max. connection number>20 - UDP connection: Max. connection number>20 - Serial baud rate: 50~230400bps - Other Parameters: - Status indicator: Status indicator - Environmental standard: - Operating temperature: -20'C~+70'C - Operating humidity: 10%~90% RH no condensing - Storage temperature: -40'C~80'C - Storage humidity: 5%~90% RH no condensing - Additional properties: Frequency bandwidth optional: 20MHz~40MHz automatically - The range of baud rate: 1200~500000bps - Supports transparent transmission mode - Supports wireless roam - Supports multiple network protocols: PPPOE / TCP / UDP / DDDNS / DHCP / DNS / HTTP / Firewire - Supports AT+ instruction set - Supports two config methods: Serial / WEB - HLK-RM04 is a new low-cost embedded UART-ETH-WIFI module (serial port - Ethernet - Wireless network); This product is an embedded module based on the universal serial interface network standard built-in TCP / IP protocol stack enabling the user serial port Ethernet wireless network (Wi-Fi) interface between the conversions; Through the HLK-RM04 module the traditional serial devices do not need to change any configuration data can be transmitted through the Internet network; Provides a quick solution for the users serial devices to transfer data via Ethernet