The selection of 2-core signal line specifications needs to consider many factors, such as signal transmission distance, transmission rate, anti-interference and so on. Generally speaking, appropriate specifications CAN be selected according to the required transmission rate and transmission distance, such as common RS232, RS485, CAN, etc. However, it should be noted that there are great differences in anti-interference between different specifications of signal lines.

Therefore, if you need to transmit signals over a long distance or work in a harsh environment, you can choose a specification with better anti-interference performance, such as RS485. However, if higher transmission rate and shorter transmission distance are needed, specifications with higher transmission rate, such as CAN, can be selected.

In the actual selection of signal line specifications, we also need to consider factors such as supplier selection, price and reliability, and reduce the cost as much as possible on the basis of meeting the demand.

In short, the selection of 2-core signal line specifications needs to comprehensively consider many factors, and choose the specifications that are most suitable for your own needs to ensure the stability and reliability in practical applications.