Key Features: 1.Explosion proof Zones 1 and 2 with ATEX certification 2.Adjustable knob to set switch at any desired switching pressure 3.Transparent enclosure for ease to monitor switch point 4.Squeezing cable gland to dust and moisture protection 5.Robust performance over the life 6.Easy installation 7.IP54 protected 8.Maximum operating pressure: 10 kPa 9.Operating temperature: -20 deg cel to + 80 deg cel 10.Silicone diaphragm, tempered at 200 deg cel 11.Switch rating: max. 1.0A / 250 VAC 12.Certification: Low Voltage Directive 2006/95/EC; RoHS Directive 2011/65/EC Some suggested fields of application include: 1.Monitoring air filters and ventilators 2.Monitoring industrial cooling-air circuits 3.Overheating protection for fan heaters 4.Monitoring flows in ventilation ducts 5.Controlling air and fire-protection flaps 6.Frost protection for heat exchangers 7.Air flow switch