KOBOLD pressure meter/-monitor of model PDL are economical electronic pressure switches. The switch output can be adjusted on-site with an adjusting screw. With help of an elastic spring measuring element and by usage of Hall effect, up to 2 switching outputs can be generated for a given pressure. The switching outputs can be delivered optionally with N/O or N/C function. The small robust construction and different pressure connections make it an ideal unit for serial usage.