Wireless module Serial to RJ45 Serial To Wifi HLK RMO4

Wireless module Serial to RJ45 Serial To Wifi HLK RMO4 

The HLK-RM04 is a versatile wireless serial networking module that enables UART serial devices to communicate over Wi-Fi or Ethernet (RJ45) networks. It acts as a transparent bridge between traditional serial communication and modern IP-based networks, allowing legacy devices to be easily integrated into LAN or wireless systems without changing existing firmware. The module includes an embedded TCP/IP stack and supports multiple operating modes for flexible networking solutions.

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Features

• Serial to Wi-Fi / Ethernet conversion
• Integrated RJ45 Ethernet port (10/100 Mbps)
• Wi-Fi support (802.11 b/g/n)
• Transparent UART data transmission
• Multiple network modes: Access Point, Client, and Router
• Supports TCP and UDP communication protocols
• Configurable via AT commands or web interface
• Wide baud-rate support for UART communication
• Supports DHCP and static IP configuration
• Built-in security: WPA/WPA2 encryption
• Compact, embedded-ready design
• Low power consumption

Applications

• Serial device networking and modernization
• IoT gateways and remote data transmission
• Industrial automation and control systems
• Remote monitoring and telemetry
• Home automation systems
• Connecting legacy UART devices to Wi-Fi or LAN
• Embedded networking projects