What type of plug is M12?

What type of plug is M12?

For data applications, there are five main types of M12 connectors with key positions A, B, C, D or X. These connectors are available with 2, 3, 4, 5, 6, 8, 12, or 17 pins. Depending on the number of signals, type of signals, type of interface involved in the connection, and the connector code.