Turck FCS-M18-LIX Flow Sensor – Immersion Sensor with Integrated Processor, Flow sensor for gaseous media, Calorimetric principle, Adjustment via potentiometer, DC 3-wire, 19.2…28.8 VDC, 4…20 mA analog output, Cable length (L) 2 m, Power-on LED, Nickel-plated brass sensor