Supports USB expansion of 8-way isolated RS485 communication interface, which is convenient for users to access multiple RS485 serial port devices. Supports Type-C direct power supply, and also reserves a 5V-36V DC wide voltage auxiliary power supply interface. Onboard integrated power isolation can provide stable isolation voltage. Onboard integrated digital isolation can be used for signal isolation, with high reliability, strong anti-interference and low power consumption. Onboard ( ient voltage suppression tube) can effectively suppress surge voltage and ient spike voltage in the circuit, -protection and anti-static. Onboard self-recovery fuse and protection diode can stable output of current and voltage, prevent overcurrent and overvoltage, and improve impact resistance. The 120R terminal resistor of the onboard RS485 interface can be modified through the jumper cap setting, and the switching is flexible. The external LED indicator is convenient for viewing the power supply, device configuration status and signal receiving and sending status. The guide rail housing design supports stacking combination, which is easy to install and to use. Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Black Material:plastic Package Contents: 1 x USB To 8CH RS485 module 1 x USB Type-A to Type-C cable 1 x screwdriver 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.