usb serial adapter from $19.95 only at serial adapter source www.USBSERIAL.com
1x 422/485 USB 476
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1x 422/485 USB

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USB to single serial port converter with a DB9 (9-pin male) connector. (RS-422/RS-485)
Features : USB-COMi l Adds high speed RS-422 port via USB connection. l 384 byte receive buffer. l 128 byte transmit buffer for high data throughput. l Data rates: 300 bps to 230K bps. l Serial connector: One DB-9 male connector. l Easy connectivity to printers, POS, Industrial control devices. l RS-422 data signals: TX-, TX+, RX+, RX-, GND, RTS-, RTS+, CTS+, CTS-. Bus-powered. No external power supply needed. ...
Part No. USB-COM-I | View Details
$49.89
USB to DB9connector. RS-422/RS-485 Optical Isolation & Surge Protection
Features : USB-COMi-SI: USB to single serial port converter with a DB9 (9-pin male) connector. (RS-422/RS-485) Comes with a USB cable. This model supplies Optical Isolation & Surge Protection. Each RS-422/485 port is individually optically isolated with 2000 volt DC optical isolation. The optical protects your PC or notebook from spikes and surges on the RS-422/485 network, by converting the electrical pulse into an optical signal and then changing it back into an electrical pulse. Your computer is well protected, since the surges and spikes cannot cross the optical link. Each RS-422/485 port is individually protected by surge protector to withstand electrostatic discharge and power surges u...
Part No. USB-COM-I-SI | View Details
$89.89

usb serial adapter from $19.95 only at serial adapter source www.USBSERIAL.com