SystemBase’s core technology lies in interconnecting scattered, isolated devices. We develop products with this technology to help devices and people to maximize synergy and contribute to each other. SystemBase has dedicated itself to this field of device networking since its foundation in 1987.

PC only has one serial ports, thus the need for more PCs arise when connecting a number of devices to the PC. However ,this method is neither cost-effective nor rational .PCs in general consist of an optional slot for such extension needs. there are many types of slots such as ISA/PCI BUS ,USB ,IEEE 1394, and still others. A serial "Multiport" mounts multiple serial ports on one board or one box, enabling installation on a option slot.

Multi-1/PCI Series is a Universal PCI Multiport Serial Board designed for POS, ATM, OA and FA applications. Multi- 1/PCI Series is designed to supply 5V and 12V power to an external device by using the No. 9 pin (RI signal line) according to a user's choice. The function allows you to utilize devices requiring low-power consumption such as barcode readers and receipt printers without an additional power supply.

Multi-4,8/USB Series enables the connection of up to 4 or 8 asynchronous serial devices such as terminals, modems,
printers, and scanners to make a PC an economical but a powerful multi-user and multi-device system. TXD and RXD LEDs are included in the product for the displays of data transmission.

CS-428 converts RS232 signals to RS422 or 485. It is an efficient solution for applying advantages of RS422/485 to
legacy RS232 devices. The converter operates with no extra software installation. With simple DIP switch toggling,RS422 or RS485 can be selected. Also, the product is fully compatible with serial COM port in PC.

CS-428/9 : RS232 to RS422/485 Converter, Need to control the RTS signal by software.

CS-428/9AT : RS232 to RS422/485 Converter, Auto Toggling Supports

Multi-1A is a serial port PCMCIA card for the notebook computer. By connecting one asynchronous device like a
terminal, modem, printer, or scanner, the PCMCIA Multi-1A makes the notebook more economical and powerful as
the multi-device system. Transmission speed rises up to 921.6Kbps.Multi-1/PCMCIA Series provides three Interface models: RS232, RS422, and RS485. It supports a communication speed of up to 921.6Kbps and guarantees high-performance. With auto-toggling signal for RS422/485 provided in device driver, it makes the line drivers control signals of input/output precise and realizes a stable communication. All the RS232/422/485 transceivers have 15KV ESD protection function and therefore protects the product from electrical shock. Available in 1,2 and 4 port Models

WCS-232 converts RS232 signal to wireless Bluetooth signal. If both ends of communication use WCS-232, wireless 1:1 data communication will be available. Portability is maximized so that it can be applied to a PC, laptop, PDA, etc.

It is fully compatible with the serial COM port of PC, The product needs to be used in pairs.

CS-428i is an RS232 to RS422/485 converter with an enhanced Opto-Isolation feature(3KV) specialized for industrial purposes that require high stability and reliability in communication.

It supports a true communication speed of 921.6Kbps for RS232 side as well as RS422 and RS485 sides.
 

PLC-232 converts RS232 communication data to be transferred using the PLC (Power Line Communication) technology, which, in short, operates as an RS232 to PLC converter. With no additional communication cabling, serial device communication is available using only the existing power line. It is fully compatible with the serial COM port of PC. The product needs to be used in pairs.