Its Converts Serial data and parellel input it transmits many I/O Signal with a few signal cable It is possible to make a wireless transmission with BWF
ISP-A1C Specifications
It can transmit signals with 16 points max./unit for both input and output.
It can make a high-speed transmission with 62.5kbps.(Only ISP-A1C).
It can extend up to 128 points max. by increasing units.