USB Serial
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$21.99 As low as: $19.71The GM-1011-B is an RS-232 serial port optoelectronic isolator. It adopts advanced optoelectronic isolation technology, maximally protects RS-232 serial interface devices from bad environment damage, such as ground loop circuit voltage, surge, lightning, ESD, hot-plug and electromagnetic interference, etc.
- Standards: RS-232 & CCITTV.24 asynchronous protocol
- Power: from RS-232(TXD, RTS or DTR)
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$32.95 As low as: $30.97The RS-232 extender with optoelectronic isolation allows extending the communication distance between 2 sets of asynchronous RS-232 communication devices to 12km.
- Enables RS-232 transmission distance to 12km
- Isolated voltage: 2,500Vrms impulse or 500VDC
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$17.59 As low as: $16.53The GM-1004E-B converts RS-232 signals into balanced differential RS-485 signals. The converter is designed to protect the RS-485 port; with integrated TVS’s (TRANSIENT VOLTAGE SUPPRESSOR).
- Transmission media: twisted-pair or shielded cable
- Baudrate: 300ps-115.2kbps
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$20.89 As low as: $19.64The GM-1004E-B converts RS-232 signals into balanced differential RS-485 signals. The converter is designed to protect the RS-485 port; with its advanced TVS’s (TRANSIENT VOLTAGE SUPPRESSOR).
- Transmission media: twisted-pair or shielded cable
- Isolation: Isolated voltage 2,500Vrms 500VDC non-stop
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$54.95RS232 to TTL CMOS Conversion
Conveniently convert to TTL from RS232 with this RS232 to TTL CMOS conversion adapter, it supports standard RS232 signals and does not require any additional power source once connected.
- Provides one RS232 to TTL/CMOS adaption
- Supports 5V and 3.3V Tolerance Signals
- Very compact
- Supports baud rate up to 115.2 Kbps
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$299.95 As low as: $277.93USB-8COMi-M USB to RS-422/485 Adapter connectivity through a Single USB adding up to eight serial port converters with DB9 (9-pin male) connectors, metal housing. (RS-422/RS-485) Learn More -
$289.99 As low as: $268.27Optical isolated Quad RS-422/485 Serial Adapter is designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB Serial Adapter instantly adds four RS-422, or RS-485 serial communication ports to your system. Learn More -
$169.99 As low as: $154.87USB-4COMi-M USB to Quad RS-422/485 Serial Adapter for Windows 10, 8, 7 and Server 2003/2008 is housed in a metal chassis to protect the item. External dip switches to easily configure the item. Learn More -
$169.99This 2-Port USB to RS-422/485 serial adapter allows you to add two RS-422 or RS-485 serial ports by connecting to a USB port. This adapter offers 2000V optical isolation and 25KV ESD surge protection. Learn More -
$19.90 As low as: $18.71Out of stock
Professional grade USB to RS485 Converter optimized for Windows 7/8/10 and Server 2003/2008. High-Speed and Interface compliance,USB1.1,2.0,3.0, EIA/TIA RS-485. Learn More
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5.0 out of 5 stars
Very convenient cable.
I got this cable to lengthen a USB cable that was just a bit too
(Review by Gary Pfalzbot) -
5.0 out of 5 stars
Works like it should..
I'm using this to power my T-Mobile modem in my camper off the 12V house
(Review by Larry P) -
5.0 out of 5 stars
Perfect!.
Just what I needed.
(Review by John)