EarlyBirdSavings Series Converter Connector between RS-232 and RS-422 Data Communication EIA/TIA Series Converter Connector between RS-232 and RS-422 Data Communication EIA/TIA It is mainly used for communication between main controller machines, main controller machine and SCMs or Peripherals, point to point and point to points remote communicate network, it achieve request-response communication between multi-machines, it is mainly used for the field of electricity, industrial automatic control, IC card billing system; such as one card solution, access control system, parking system, and so on. Standard: Accord EIA RS-232, RS-422 standard. Dimension: 1.2x 3.3 x 1.6cm Shell:Iron Color:White Weight:35g