Supports USB/RS485 bidirectional communication. Utilizes the CH343G chip for a transmission rate of up to 6Mbps. The RS485 chip uses the imported SP485EN chip. The onboard TVS (transient voltage suppressor) effectively suppresses surge voltages and transient spikes in the circuit, providing lightning and static protection. An onboard resettable fuse and protection diode ensure 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 lightning 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: Windows, Linux, for Mac OS and other operating systems (WIN10 or above driver-free) Color: Black Material: plastic Package Contents: 1*USB to RS485 Converter