AJMRTC Elfin-EW40B Serial Server Gateway, RS232 to Wi-Fi & BLE Bluetooth Converter with Internal Antenna, STA/AP/AP+STA Mode, Modbus RTU to Modbus TCP Gateway (Server Only)

AJMRTC Elfin-EW40B serial server gateway converts RS232 serial signals to Wi-Fi and Bluetooth BLE wireless signals. Built with internal PCB antenna, it saves space and avoids external antenna wiring trouble. It supports STA, AP, AP+STA mixed Wi-Fi modes to adapt to different local area network topologies. It realizes Modbus RTU to Modbus TCP protocol conversion and works under server only mode, which is widely used in PLC, sensor, instrument and industrial automation equipment networking. It supports TCP/UDP, MQTT, WebSocket and other common IoT protocols, with SmartLink APP quick distribution network. Users can set parameters via built-in web page or PC IOTService software, and complete firmware update through wireless OTA. It supports TLS encryption to protect transmission data, suitable for factory automation, smart meter, remote monitoring and other serial-to-wireless transformation scenarios.

Specifications

1. Model: Elfin-EW40B
2. Interface: RS232
3. Wireless: 2.4GHz Wi-Fi 802.11b/g/n + BLE 5.0
4. Antenna: Internal PCB Antenna
5. Wi-Fi Mode: STA / AP / AP+STA
6. Protocol: Modbus RTU, Modbus TCP, TCP, UDP, MQTT, WebSocket
7. Modbus Role: Server Only
8. Max Serial Baud Rate: 230400 bps
9. Power Input: 5~18VDC
10. Configuration: Web Config, IOTService Tool, SmartLink APP
11. Upgrade: Wireless OTA
12. Security: TLS, AES Encryption