The series P42-M sensors consist of an external sensor head and an evaluation unit, which drives the head and evaluates the measured values and transmits them to the outside. Two analogue outputs 0-10V and 4-20mA; two adjustable switching outputs (PNP), two switching outputs, which indicate the position of the object above or below the analogue range, an RS232 interface and a bit parallel- word serial interface for driving a digital display are available.