The 81513502 is a DIN rail-mounted pressure switch designed for pneumatic control applications with electrical output capability. It features an adjustable switching pressure range of 2 to 8 bar with a hysteresis of 0.5 bar at 1 bar, 0.6 bar at 2 bars, 0.8 bar at 4 bars, and 1 bar at 6 bars, ensuring precise pressure monitoring and control. The device utilizes push-in connections for semi-rigid tubing (Ø 4 mm per NFE 49100 standard) and provides a contact rating of 5A at 220-230V with a standard microswitch (V4 83 170 4 I W2). Operating over a temperature range of -10°C to +70°C with a mechanical life of 10^6 operations, this pressure switch is suitable for industrial automation, pneumatic system monitoring, and control applications requiring reliable pressure detection and electrical signal output.