Sensor / Actuator Connectors Hirschmann Sensor / Actuator Connectors provide reliable connection technology and M8, M12, M23, and 7/8' connector assembly types. The series includes single- and double-ended cordsets and straight and angled male and female options. Hirschmann Sensor / Actuator Connectors are ideal for sensors and valves with I/O modules, I/O modules with control systems, photoelectric sensors, hydraulic valves, and pressure switches.