Features:The turbine flow meter is made of high quality material, with long serving lifeThis turbine flow meter is suitable for water heater, water treatment systemFlow meteris shock resistance, heat resistance, cold resistance, moisture resistance, durabilityThis hall turbine flow sensor meter is used forliquid flow rate controlSmall size, and easy to installSpecifications:Thread size: DN40 G1.5" Minimum rated working voltage: DC4.5v-12vWorking voltage range: DC 4.5 ~ 12 VLoad capacity: 10mA (DC 5V)Working temperature: 80Humidity range: 35% ~90%RH (no frosting state)Water-pressure resistance: 1.75Mpa Working range: 5-150L/minStorage Temperature: -25~80Storage humidity: 25%-95%RHOutput pulse high level: >DC 4.5v (input voltage DC 5v)Output pulse low level:<DC 0.5 V(input voltage DC 5v)Accuracy (flow -- pulse output): 10 ~ 300 L/min 5%Output pulse duty ratio: 5010%Output rise time: 0.04SOutput drop time: 0.18SFluid-pulse characteristic:Level test pulse frequency (Hz)=(0.5*Q) 5%(horizontal test) (Q is flow L/min)Size: 9.3cm/3.66inWeight:146gPackage includes:1 x Turbine Flow meter