ITEM NAME:G1" Hall Effect Liquid Water Flow Sensor Switch Flow Meter Fluid Meter Description: Copper material, small size, easy to install. The water flow sensor is applied for water heater, and can be used as flow switch. Maximum water pressure: 1.75MPa, flow range: 2-50L/min. Stable, high temperature, low water pressure start, safe. Specification: Water Pressure >1.75MPa Working Voltage Range DC5ï ½Å¾15V Insulation resistance >100MÃŽ © Accuracy 1ï ½Å¾25L\MINï ¹Å¾Ã‚ ±5% Flow Pulse Characteristic F=(8*Q-4) ±5%ï ¼Å’F:frequency Qä ¸ ºL/Min Output pulse high level >DC 4.7V(input DC 5V) Output pulse duty cycle 50% ±10% External Thread Diameter: G1 inch Package Includes: 1 Piece Water Flow Sensor.The water flow sensor is applied for water heater, and can be used as flow switch. Flow Pulse Characteristic F=(8 Q-4) ±5%ï ¼Å’F:frequency Qä ¸ ºL/Min. Output pulse duty cycle 50% ±10%. Output pulse high level >DC 4.7V(input DC 5V).