The PSM01 model is a screw-in pressure switch that operates using either a diaphragm or piston design. It can either open or close an electrical circuit based on whether the pressure is increasing or decreasing. Users can easily adjust the pressure setting using an adjustment screw on-site, and WIKA also offers the option to set this switch point at the factory.

This pressure switch is designed for use with compressed air, neutral fluids, self-lubricating liquids, and neutral gases. It has a high precision with a switch point repeatability of ±2% of the total pressure range. Its compact design allows for easy installation using a socket wrench, making it suitable for both original equipment manufacturers (OEMs) and customers with smaller order volumes.