Flow Sensor Measuring range: 0.1...2.5 l/min Operating temperature: -20...+100 °C Output frequency: 37...917 Hz Accuracy: ±3% Electrical connection: DIN 43650C Housing Material: Polyamide (PA/Nylon) Output: NPN Open Collector Frequency Output / 50 mA Thread: G1/4" Operating voltage: 24...5 VDC Repeat accuracy: 0.5 %