G1/2" Water Flow Hall Sensor Switch 1-30L/min for Electromagnetic Water Heater Cooling System Circulatory System

This is a small zise product that easy to install. Made of good material, the product is precise and durable, no power consumption. Suitable for gas water heater, electric water heater, washer, wall-hanging stove, electromagnetic water heater. G1/2 Water Flow Hall Sensor Switch 1-30L/min for Electromagnetic Water Heater Cooling System, Circulatory System. G1/2 1-30L/min DC5V Water Flow Sensor Flowmeter Hall Flow Sensor Water Control 1.75MPa Counter Switch For Arduino. brand new and high quality. Features: This is a small zise product that easy to install. Made of good material, the product is precise and durable, no power consumption. Suitable for gas water heater, electric water heater, washer, wall-hanging stove, electromagnetic water heater, intelligent IC water meter, cooling system, circulatory system, heating equipment, etc. Three lines: red is positive, black is negative, yellow is pulse signal. Specification: Test range: 1~30L/min(m3/h). Instantaneous flow pulse characteristics