Supports USB/RS485 bidirectional communication. Utilizes the new CH343G chip for a transmission rate of up to 6Mbps. The RS485 chip uses the SP485EN chip. The onboard (transient voltage suppressor) effectively suppresses surge voltages and transient spikes in the circuit, providing and static protection. An onboard resettable fuse and protection diode stable current and voltage output, preventing overcurrent and overvoltage, and enhancing shock resistance. Three onboard LED indicators provide easy visibility into power signal transmission and reception. Product Parameters: Chip: CH343G Product Model: USB-T03 Host interface: USB Communication Rate:50bps ~6Mbps Device Interface: RS485 USB interface: self-resetting fuse, ESD static protection USB interface type: USB-A type interface RS485 interface: Interface Type:Terminal Block Interface pinouts: GND, A+, B- Direction Control: Hardware automatically determines and controls data transmission direction. Interface Protection: Provides 600W protection, surge protection, and 15KV ESD protection. Transmission Distance: RS485 (approximately 1200 meters) at low data rates. Transmission Mode: Point-to-Many (up to 32 nodes; adding a repeater is recommended for 16 or more nodes). Indicator light: PWR: power indicator, access to the USB, detecting the voltage is lighted TXD: Transmit indicator, there is data from the USB port to send out high lights RXD: Receive indicator, light up when there is data sent back from the device interface. Compatibility: , Linux, for OS and other operating systems (WIN10 or above driver-free) Color: Black Material: plastic Package Contents: 1*USB to RS485 Converter 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.