SODIAL(R) HQ-A678-1 1-30L/min G1/2" Water Heater Hall Effect Flow Sensor Counter Product Name : Hall Flow Sensor;Model : HQ-A678-1;Max Switching Current : 0.5A; Max Load Power : 10W;Max Switching Voltage : 100V DC;Max Broken down Voltage : 220V DC Start Water Pressure : &lt;0.1MPa;Min Withstand Water Pressure : 1.2MPa Response Time : 0.2S;Release Time : 0.2S;Connector Pin Number : 3 Pin Thread Size : G1/2";Cable Length : 15cm / 5.9";Weight : 63g;Package Content : 1 x Hall Flow Sensor