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you buy from
Roalan you will be treated well, you will get a
high-quality product which will not cost you a fortune. And you will get more
satisfaction out of your purchase than you expected.
Join our Many satisfied customers
all over the world.
If your purchase is not right
for the application, just send it back for full refund.
You don't have to buy online.
Just call us on +44 (0)1202 861512 to discuss your application.
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Embedded
ARM9 CPU Modules
ARM processors boast energy-saving operation while offering very good
processing power. Arm 9 processors are ideal for mobile battery powered
applications
Serial
RS232
Comms Cards
PCI Express (PCIe) and u PCI serial 1 to 16 port serial communication adapter
cards/boards including low profile half height
Intelligent
Serial Cards
4 to 128 Port Intelligent Serial
RS232 RS422 RS485
Parallel
Printer Cards
Universal PCI and PCIe parallel printer adapter
cards/boards including low profile half height
Serial
plus Parallel Combo
PCI Express (PCIe) and PCI-X 133MHz 64bit Dual Serial RS232 and
Parallel Adapter
Gigabit
Ethernet Cards
PCI-X
3.3V (3.3 Volt)
64 bit Network Gigabit
Ethernet cards/boards. PCI-Express Gigabit adapter. Copper and fibre
Multi-Modem
Cards
PCI/PCI-X
3.3V (3.3 Volt)
64 bit Multi- Modem Adapter cards/boards
RS422
RS485 Cards
PCI Express (PCIe) and universal PCI RS422 RS485 Serial Comms cards/boards
PCI to USB
Cards
PCI, PCI-X PCI Express (PCIe) to USB V2.0 Adapter cards
USB to
Serial converters
USB to Serial RS232 RS422/485 1
to 32 Ports Adapters
USB to
Serial converters
USB to Serial RS232 RS422/485 8 and 16 Ports Adapters
USB
to PCMCIA
USB Adapter for Cardbus Wireless Modem 3G Cards
USB 3G Modem
USB to 3G Wireless Modem for mobile cell phones
ExpressCard
to Serial
ExpressCard to Serial RS232 Card
PC Card to
Serial
PCMCIA Cardbus to Serial RS232
Adapter Cards
PC Card to
Parallel
PCMCIA Cardbus to Parallel Printer and
Dongle Cards
PC Card to
Serial RS422/485
PCMCIA Cardbus to Serial RS422 RS485
Adapter Cards
ExpressCard
To PCMCIA Adapter
Converts ExpressCard slot to PCMCIA CardBus PC
Card
PCI/PCI-X
Firewire Cards
PCI
PCI-X 64 bit 3.3V (3.3 Volt) to Firewire (IEEE1394)
low profile half height adapter cards/boards,
Ethernet to
Serial Servers
Ethernet to Serial RS232 RS422
RS485 1 to 16 Port Converters
Serial to
Bluetooth
The Bluetooth
Wireless to RS232 Serial Port Converter Adapter
Wireless Network-based
Serial Device Server
Wireless WiFi LAN IEE802.1b to RS232 RS422 RS485
Serial Adapters
GSM
to Serial
Mobile Cell Phone to Serial RS232
Quatech
Products
Order Quatech products on-line
VSCom
Products
Order VScom products on-line
3GWireless
Cellular Router
The EA511 wireless router gives you everything you need to set a small to medium
network with internet access. Connection to the internet is via an ADSL line or
3G broadband cellular Wireless connection (PCMCIA card and SIM required from
your chosen service provider)
CAN-BUS
to Ethernet
The VScom NET-CAN 110 provides CAN-BUS communication over Ethernet. It provides
completely secured communication for both data transfer and configuration to the
attached CAN devices CAN-BUS
to USB
The VScom USB-CAN is an adapter from USB to CAN. It connects a PC via the USB
interface to the CAN bus. Since current computers all have several USB ports,
the installation is simple CAN-BUS
to Serial
The VScom SER-CAN is an adapter from serial port to CAN. It connects a PC via
any serial port to the CAN bus. Many computers still have a serial port, the
installation is simple GSM
Cell Phone Mobile Remote Switch
Your mobile cell phone becomes your remote control. You will be able to open
barriers and doors, switch on heating and cooling with your mobile cell phone. Just dial from authorized user
number and the barrier and doors are opened, heating switch on, computer powered
up, or any electrical device switched on or off GSM Cell Phone Mobile Controller
The TWCT allows you toPlease pay all invoices over 30 days old. Best
regards Roger
Swabe monitor and control your remote units/equipments. It's a
product which not only enables remote monitoring and control but also sends you
SMS/Email in case of alarm conditions
VSCom
Comparison
| | -
USB to Serial RS422/485 Converters
These adapters enable you to add serial COM RS422/485 ports to your PC
Workstation or Embedded System, providing the ability to communicate between USB
(Universal Serial Bus) and serial peripherals.
They add Windows serial COM-ports via USB connection and are compatible with new
Windows OS and legacy RS422/485 devices.
This plug and play USB solution is perfect for mobile instrumentation and
applications requiring many RS422/485 devices. USB plug and play allows easy
serial port expansion that requires no IRQ, DMA or I/O port resources. Users no
longer need to power down the system and open the case, saving time and costs.

USB-S422
USB to Serial RS422/485 Communication Converter 1X 9 pin male
connector
 | One RS422/485 port male DB9 connector |
 | Speed up to 921.6K bps |
 | Signals: RS422: TxD+/-, RxD+/-, RTS+/-,
CTS+/-, GND RS485: Data+/-, GND |
 | USB bus powered, no external power supply |
 | Windows 7, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in) |
 | 3 year warranty |
USB-S422


Customer
Reviews
Customer
Reviews Customer
Reviews

USB COM-I-SI-M
USB to RS422/RS485 DB9 and terminal block serial adapter to USB isolated, metal case, DIN-Rail
The high speed serial port with the 128 byte FIFO
allow high speed communication, even in heavy loaded systems. Unique features
reduce the system load. The serial port also allows unusual speed settings like
500.000bps.
 | One RS422/485 port, optical isolated |
 | Up to 921.6kbps |
 | RS422 TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND
RS485 Data+/-, GND |
 | Parity None, Even, Odd |
 | Data Bits 7,8 |
 | Flow RTS/CTS |
 | Speed 180bps to 921Kbps |
 | Support USB 2.0 and USB 1.1 Full Speed 12MHz |
 | UART has 128 byte FIFO |
 | No IRQ and I/O resource required |
 | Non standard baud rates available |
 | 15KV surge protection |
 | 2KV optical isolation |
 | USB bus powered, no external power supply |
 | Windows 7, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in), Mac OSx |
 | One DB9 male and terminal block |
 | 57×72×22 mm (W×L×H)
82×77×22 mm with DB9 connector and ears |
 | Operating temperature 0 to 60oC |
 | Approvals: FCC Class A, CE Class A |
 | 3 year warranty |
USB COM-I-SI-M
DK-35A DIN Rail Mounting Kit


USB 2COM-I-SI-M
USB to 2 Port RS422/RS485 DB9 and terminal block serial adapter to USB isolated, metal case, DIN-Rail
The high speed serial port with the 128 byte FIFO
allow high speed communication, even in heavy loaded systems. Unique features
reduce the system load. The serial port also allows unusual speed settings like
500.000bps.
 | Two RS422/485 port, optical isolated |
 | Up to 921.6kbps |
 | RS422 TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485 Data+/-, GND |
 | Parity None, Even, Odd |
 | Data Bits 7,8 |
 | Flow RTS/CTS |
 | Speed 180bps to 921Kbps |
 | Support USB 2.0 and USB 1.1 Full Speed 12MHz |
 | UART has 128 byte FIFO |
 | No IRQ and I/O resource required |
 | Non standard baud rates available |
 | 15KV surge protection |
 | 2KV optical isolation |
 | USB bus powered, no external power supply |
 | Windows 7, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in), Mac OSx |
 | Two DB9 male and terminal block |
 | 57×72×22 mm (W×L×H)
82×77×22 mm with DB9 connector and ears |
 | Operating temperature 0 to 60oC |
 | Approvals: FCC Class A, CE Class A |
 | 3 year warranty |
USB 2COM-I-SI-M
DK-35A DIN Rail Mounting Kit


USB
2COMI USB to Dual Serial
RS422/485Communication Converter 2 X 9 pin
male Connectors
 | two RS422/485 portsed |
 | Up to 921.6kbps |
 | RS422 TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485 Data+/-, GND |
 | Parity None, Even, Odd |
 | Data Bits 7,8 |
 | Flow RTS/CTS |
 | Speed 180bps to 921Kbps |
 | Support USB 2.0 and USB 1.1 Full Speed 12MHz |
 | UART has 128 byte FIFO |
 | No IRQ and I/O resource required |
 | Non standard baud rates available |
 | Windows 7, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in), Mac OSx |
 | External power supply 5V DC required. Adapter included |
 | Operating temperature 0 to 60oC |
 | Approvals: FCC Class A, CE Class A |
 | 3 year warranty |
USB 2COMI


USB 4COM-I-SI-M
USB to 4 Port RS422/RS485 DB9 and terminal block serial adapter to USB isolated, metal case, DIN-Rail
The high speed serial port with the 128 byte FIFO
allow high speed communication, even in heavy loaded systems. Unique features
reduce the system load. The serial port also allows unusual speed settings like
500.000bps.
 | Four RS422/485 port, optical isolated |
 | Up to 921.6kbps |
 | RS422 TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND
RS485 Data+/-, GND |
 | Parity None, Even, Odd |
 | Data Bits 7,8 |
 | Flow RTS/CTS |
 | Speed 180bps to 921Kbps |
 | Support USB 2.0 and USB 1.1 Full Speed 12MHz |
 | UART has 128 byte FIFO |
 | No IRQ and I/O resource required |
 | Non standard baud rates available |
 | 15KV surge protection |
 | 2KV optical isolation |
 | Built in Power supply |
 | Windows 7, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in), Mac OSx |
 | One DB9 male and terminal block |
 | 257×147×44 mm (W×L×H)
277×147×44 mm with DB9 connector and ears |
 | Operating temperature 0 to 60oC |
 | Approvals: FCC Class A, CE Class A |
 | 3 year warranty |
USB 4COM-I-SI-M
USB 4COM-I-M
as above less opt-isolation and surge protection


USB 8COMI-RM
USB to Quad Serial
RS422/485Communication Converter 8 X 9 pin
male Connectors
 | Eight RS422/485 port male DB9 connectors |
 | Speed up to 921.6K bps |
 | Signals: RS422: TxD+/-, RxD+/-, RTS+/-,
CTS+/-, GND RS485: Data+/-, GND |
 | Built in power supply |
 | Windows 7, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
 | 0 to 60oC |
 | Approvals: FCC Class A, CE Class A |
 | 3 year warranty |
|
USB 8COM-I-RM
|