M12 connector is a standardized circular connector, mainly used in the industrial field. M12 connectors can be classified in many ways, such as connector type, number of pins, wiring method, function, protection level, interface type and special functions.



The most common classification method is still based on the interface type. If classified by interface type, the common interface types of M12 connectors are type A (standard), type B, type D and type X. Type A is the most common type, often used in industrial applications and sensor connections; unlike type A, D code is often used to transmit data; M12 X Code connector is even more different, mainly used for industrial Ethernet and high-speed data transmission, it is matched with RJ45 connector and is also suitable for use in industrial cameras. There is also a special model called L code. M12 L Code connector is mainly used for high current transmission and is suitable for power system and motor connection.



According to the protection level, it can be divided into ordinary standard M12 connectors and waterproof and dustproof M12 connectors, and the general waterproof level can reach IP67 or IP68. According to the number of pins, M12 connectors are 3-pin, 4-pin, 5-pin and 8-pin.



According to the number of pins, M12 connectors are 3-pin, 4-pin, 5-pin and 8-pin. M12 3-pin connectors are often used in low-power applications to transmit power and signals. M12 4-pin connectors are widely used in sensors, actuators and other devices, usually for 2 power supplies and 2 signal transmissions. M12 5-pin connectors are suitable for applications that require more signal channels, such as transmitting multiple signals. M12 8-pin connectors are common in applications that require multi-channel data and signal transmission, such as industrial Ethernet or fieldbus systems.
