Features: <br>1. 100% Brand new and high quality RS485 Board. <br>2. No need external power, powered by USB port. <br>3. LED display of communication data. <br>4. Machine PLC data reading and writing. <br>5. Monitoring data read and write, and PTZ control. <br>6. Centralized control of household electrical appliances. <br>7. Access Control System: Card. <br>8. A variety of industrial automation: Instrumentation. <br>9. Parking: Bus Fees. <br>10. Dining Hall: Staff Attendance. <br>11. Highway toll station: ATM machine. <br> <br>Specification: <br>Condition: 100% Brand New <br>Item Type: USB Serial Converter <br>Material: Plastic <br>Color: Black <br>Temperature Range: -40°C - 85°C <br>Communication Distance: 1200 m(maximum) <br>Product Size: Approx. 6.0*1.7*1.8cm / 2.4*0.67*0.7inch <br> <br>Package list: <br>2 x USB to RS485 <br> <br>Notes: <br>1. The actual product color may deviate from the photo due to light. <br>2. There may be a slight deviation in the measurement of product.<br>1、100% Brand new and high quality RS485 Board. <br>2、No need external power, powered by USB port. <br>3、LED display of communication data. <br>4、Machine PLC data reading and writing. <br>5、Monitoring data read and write, and PTZ control.