Features USB port: USB converter does not require external power. It provides power by the USB port, which is the LED display of communication data. Data reading: The converter can read and monitor data reading and PTZ controls in the converter PLC data. There is a stable and reliable structure. Essence Concentrated control: The USB to the serial port converter is a centralized control of home appliances, with high accuracy, high sensitivity, high stability and durability. Scope of application: USB turning RS485 converter is suitable for access control systems, various industrial automation, parking, restaurants and highway toll stations. Precise manufacturing: CH340 USB to RS485 is a selected electronic component, which has a precise manufacturing process to ensure durability and protection. Features: 1. RS485 Board. 2. No need external power, powered by USB port. 3. LED display of communication data. 4. Machine PLC data reading and writing. 5. Monitoring data read and write, and PTZ control. 6. Centralized control of household electrical appliances. 7. Access Control System: Card. 8. A variety of industrial automation: Instrumentation. 9. Parking: Bus Fees. 10. Dining Hall: Staff Attendance. 11. Highway toll station: ATM machine. Specification: Condition: 100% Brand New Item Type: USB Serial Converter Material: Plastic Color: Black Temperature Range: -40°C - 85°C Communication Distance: 1200 m(maximum) Product Size: Approx. 6.0*1.7*1.8cm / 2.4*0.67*0.7inch Package list: 2 x USB to RS485 Notes: 1. The actual product color may deviate from the photo due to light. 2. There may be a slight deviation in the measurement of product. Package List