The ELETTROTEC PSM-PSP series consists of adjustable membrane and piston pressure switches designed for reliable pressure monitoring in hydraulic and pneumatic systems. These compact and robust switches feature a mechanical set point adjustment, allowing users to define a specific pressure threshold. When the system pressure reaches the set value, the internal microswitch is actuated, providing a dependable electrical signal for control or alarm functions. The PSM models utilize a membrane for lower pressure ranges, while the PSP models employ a piston design for high-pressure applications, ensuring versatility across a wide range of industrial uses.