Adopts CH348L chip, half-duplex signal transmission, with advantages of long-distance transmission, low power consumption, stable and safe communication. Built-in 6V-2A self-recovery fuse, built-in signal receiving and sending indicator. Supports eight-way simultaneous receiving and sending. Supports scanners, printers and other digital devices, multiple compatible. Made of high-quality materials, sturdy and . Name:USB to RS485 Communication Module Colour:Blue Material:PCB Package Contents: 1 * USB to RS485 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.