... , antistatic, anti-jamming, 600 W lightning protection . USB TO three wire RS485 converterIndustry-specific, antistatic, anti-jamming, ... .This product according to the industrial standard design completely.1, USB line the election of high frequency shielding pure ... USB to turn 485 transmission distance: 1.2 km above;12), USB line length: 80 centimeters;13), Weight: 35 g;Application:(1), LED display ...