Parker Hannifin 003-3438-02 Cylinder Proximity Switch Sensor

Parker Hannifin 003-3438-02 Cylinder Proximity Switch Sensor (H4,H5 L4,L5) is a non-contact sensor designed to detect the position of Parker cylinder components, delivering a PNP output and operating on 4.75–30 VDC. With a PNP (sourcing) output, the sensor provides a positive-going signal to a connected input when the sensing element is activated, making it compatible with common control circuits and PLCs that read discrete position feedback. The 003-3438-02 designation identifies the specific variant for H4/H5 and L4/L5 cylinder configurations. This proximity switch is used for cylinder position feedback in automation and control applications, enabling reliable sensing in pneumatic or hydraulic cylinder lines without mechanical contact. It delivers compact cylinder-side sensing suitable for integration into Parker-based systems where robust, DC-powered position signals are required.