Waveshare 25116 UART to WiFi And Ethernet Module, Integrated 802.11bgn Module Features: 1. This is an industrial-grade integrated 802.11bgn module that can realize two-way transparent transmission of TTL serial port, WiFi, and network port. 2. It integrates multiple functions into one, including serial port server, Modbus gateway, MQTT gateway, UART to HTTPD client, etc. 3. Traditional serial port devices or MCU control devices can quickly access WiFi wireless networks through this WiFi module. 4. Small size and easy to install. 5. Suitable for data collection, IoT gateway, security IoT, smart instrument monitoring and other applications Product parameters: 1. Power supply: DC 3.3V 2. Power supply method: pin header 3. Dimensions: 25 x 40 x 8mm 4. Ethernet: 10100M auto-negotiation (connected through pin header) 5. WIFI: Complies with 802.11bgn 6. Serial port: UART 7. Frequency band: 2.412-2.484 GHz 8. Wireless network: Station AP AP+Station mode 9. Security mechanism: WPA-PSK WPA2-PSK 10. Encryption type: TKIPAES 11. Transmission power: 802.11b: +19dBm (max @11Mbps) 802.11g: +18dBm (max @54Mbps) 802.11n: +17dBm (maximum @HT20, MCS7); +17dBm (maximum @HT40, MCS7) 12. Receiving sensitivity: 802.11b: -89dBm (@11Mbps) 802.11g: -81dBm (@54Mbps) 802.11n: -73dBm (@HT20, MCS7); -71dBm (@HT40, MCS7) 13. Baud rate: 300-460800 bps 14. Check digit: none, odd, even, mark, space 15. Data bits: 5-9 bits 16. Flow control: RTSCTS 17. Protocol: TCPUDPARPICMPDHCPDNSHTTPMQTT 18. Configuration: host, browser, serial AT command 19. Communication method: TCPIP direct communication, VCOM 20. Working mode: transparent transmission, serial port command, HTTPD Client, Modbus TCP to Modbus RTU 21. Operating temperature: -40 to 85 degrees Celsius 22. Humidity range: 5% to 95%