... :2.5%(DN<40) 2>Output:pulse,4-20mADC 3>Display:LCD,LED 4>min.velocity of flow:less than 1.5m ... with lubicated system(option)6.LCD display7.Multi output pulse,4^20mADC.8.spectrum15,25,40,50,80,100,150,200 ... :Less than 95%. LWGQ-300 Field display gas meter with Lithium battery