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一、Product features：
·Compatible with USB (Universal) Rev. 1.0。
·USB signal: VCC,DATA+,DATA-,GND,FG。
·RS-442 signal: R＋、R-、T＋、T-, RS-485, D+、D-。
·Working way: asynchronous。
·Baud rate: 75bps - 5Mbps, automatic flow control。
·Transmission distance: RS-422/485: 1500 meters, the USB port is not over 5 meters。
·RS - 422/485 supports node number: 32 nodes (in standard loading situation)。
·Port form: the USB terminal A port meets with the female head, 422/485 terminal meets with DB - 9 male head。
·USB power supply, it is not need to additional power supply。
·Every appraiser has a excellent and steady switch power supply。
·The static power dissipation: <= 0.04w, the dynamic power dissipation: within 7-8mA on average。
·Support remote awaken and power management。
·Support Windows 98/ 2000 / XP。
·Storage temperature: - 25 ℃ to 85 ℃。
·Relative humidity: 5% to 95%。
·The Serial ports support static protection。
·Working temperature: - 20℃ to 60℃。
二、Application area：
·Industrial automation system。
·PLC and PLD。
·Service appraisement system, POS system and register system etc。
·Data acquisition and control system, etc。
·Intelligent monitoring system。
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