Model: UT-890A Name: USB to 485/422 converter Standard: Comply with USBV1.1, 1.0, 2.0 standards EIA 485, 422 standards USB signal: VCC, DATA+, DATA -, GND, FG -485 signal: T/R+, T/R -, GND -422 signals: T/R+, T/R -, RXD+, RXD -, GND Working mode: asynchronous, point-to-point or multipoint, 2-wire half duplex, 4-wire full duplex Direction control: automatic control technology of data flow direction is adopted to automatically identify and control data transmission direction Baud rate: 300-921.6Kbps, automatic detection of serial port signal rate Load capacity: support point to multipoint Each converter can allow connection of 32 - 422 or 485 interface devices Transmission distance: 1200m (9600bps) at 485/422 end, and no more than 5m at USB port Interface protection: surge protection, ± 15KV static protection Interface type: connector connection of USB Class A male interface and DB9 male interface Signal indication: 2 signal indicators TX and RXD, 1 power indicator Transmission medium: twisted pair or shielded wire Boundary dimension: 1555mm X 36mmX16mm (L X W X H) Operating environment: - 40 ° C to 85 ° C, relative humidity: 5% to 95% Transmission distance: 0 - 1200m Support for Win8/Win10/Win2000/2003/2008/2012/XP/Vista/7/8/8.1/10/CE//Linux, etc Color: As Shown Material: plastic Package Contents: 1 * serial cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.