HLK RM04 UART to Serial Wifi Ethernet Wifi Module

HLK RM04 UART to Serial Wifi Ethernet Wifi Module The HLK-RM04 is a versatile UART-to-Wi-Fi and Ethernet networking module designed to add wireless or wired network connectivity to serial devices. It allows transparent data transmission between a UART serial interface and Wi-Fi or RJ45 Ethernet, enabling legacy serial equipment to communicate over modern IP networks without changing existing firmware. The module integrates a complete TCP/IP stack and supports multiple network working modes, making it suitable for embedded systems, industrial control, and IoT applications.Click here to view related productsFeaturesUART to Wi-Fi / Ethernet conversion — bridges serial devices to IP networksSupports Wi-Fi and RJ45 Ethernet — flexible wired or wireless connectivityTransparent data transmission — no protocol modification requiredMultiple network modes — TCP server, TCP client, UDP communicationWi-Fi modes — Station (Client), Access Point (AP), and Router modeConfigurable via AT commands or web interfaceWide baud rate support — compatible with many serial devicesBuilt-in TCP/IP stack — simplifies network integrationNetwork security support — Wi-Fi encryption and authenticationCompact embedded module design — suitable for PCB integrationApplicationsSerial device networking (UART to Wi-Fi / Ethernet)Industrial automation and control systemsRemote monitoring and data acquisitionIoT gateways and embedded networkingLegacy equipment network upgradesSmart home and building automationCommunication interfaces for microcontrollers*Product image for illustration purposes only, actual product may vary.