Using FT232RNL chip solution, high-speed communication is stable, reliable and has good compatibility It adopts half-hole technology and is compact in size, making it convenient for users to weld, integrate and embed. It supports a serial communication rate of 300bps ~ 3Mbps The onboard self-restoring fuse and ESD protection tube ensure stable current and voltage output, prevent overcurrent and overvoltage, and work stably and safely. The onboard serial port transceiver indicator light allows you to check the signal transceiver status The VCC switching pad is reserved. The default is 3.3V TTL. It can be cut off and soldered to 5V to lead out all the functional pins of the chip to facilitate the integration and use of secondary card methods Using Type-C interface, plugging and unplugging is smooth, sturdy and reliable, and prevents reverse connection Product type: USB to UART TTL level Supply voltage: 5V Serial port (TTL level): 3.3V/5V Communication rate: 300bps ~ 3Mbps Operating system: Support Win7/8/8.1/10/11, Mac, Linux, Android, WinCE and other systems Colour:Blue Material:PCB Package Contents: 1x Serial Communication Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.