... USB TO RS485 converter Industry-specific, antistatic, anti-jamming, 600 W lightning protection . USB TO three wire RS485 converterIndustry-specific, ... follows: (the product labels have a mark) 1----------D-(B)2----------D+(A) 3----------GND Characteristics:1), power supply: ... way: asynchronous half-duplex;9), Useing environment:-25 °C to 70 °C, relative humidity is 5% to 95%;10), Transmission medium ...