Product Type: Industrial USB to RS485 Converter Host Interface: USB Device Interface: RS485 Communication Rate CH343G Chip: 300bps ~ 3Mbps USB Interface Working Voltage: 5V Interface Form: USB-A Type Connector Interface Protection: 200mA Self-Recovery Fuse, ESD Static Protection Transmission Distance: Approximately 5 meters RS485 Interface Interface Form: Terminal Block Interface Pins: A+, B-, GND Direction Control: Hardware Automatically Determines and Controls Data Transmission Direction Interface Protection: Provides 600W -Pattern, Surge, and 15kV ESD Protection (Built-in 120Ω Balancing Resistor) Transmission Distance: Approximately 1200 meters (under low-speed conditions) Transmission Mode: Point-to-Multipoint (Up to 32 Nodes, More than 16 Nodes Suggest Adding a Repeater) Indicator Lights PWR: Power Indicator Light, Red Light Illuminates When USB is Connected and Voltage is Detected TXD: Transmit Indicator Light, Red Light Illuminates When Data is Sent from the USB Port RXD: Receive Indicator Light, Red Light Illuminates When Data is Received from the Device Interface Operating Environment Temperature Range: -15°C ~ 70°C Humidity Range: 5%RH ~ 95%RH : , Linux, Android, WinCE, 10 / 8.1 / 8 / 7 / XP Color: Black Material: plastic Package Contents: 1 * 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.