PUSR USR-WIFI232-B2 Industrial UART to WiFi Module

The module can be configured via AT commands sent through its TTL UART interface or via its built-in web server. Connect to the module's default Access Point (AP) mode WiFi network, then open a browser and navigate to its default IP address (typically 192.168.1.1). The web UI allows you to set the WiFi mode (STA/AP/STA+AP), SSID, password, network protocols (TCP/UDP), and serial baud rate parameters for your specific application.

The TTL UART interface supports a wide range of baud rates from 300 bps up to 460,800 bps. The data format is configurable, typically supporting 8 data bits, 1 stop bit, and no parity (8N1) by default, with options for other configurations through AT commands or the web interface. This flexibility allows it to interface with a vast array of microcontrollers, sensors, and legacy industrial equipment that use serial communication.

Yes, the USR-WIFI232-B2 supports STA+AP mode, allowing it to function as a wireless bridge or simple router. In this mode, it can connect to an existing WiFi network (as a client) while simultaneously hosting its own WiFi network. It can bridge data between its Ethernet port, serial UART, and the wireless network, enabling scenarios like connecting a wired serial device to a cloud server via WiFi or creating a local wireless network for Ethernet-based equipment.

The module requires a stable 3.3V DC power supply with a tolerance of ±5%. While the raw specifications list a wide 9-36V DC input, this typically refers to an external power adapter option; the module's onboard circuitry regulates this down to 3.3V. For direct integration, provide 3.3V to the designated pins. The operating current varies with RF transmission power and network activity but is designed for efficient, always-on IoT applications.