Uxcell 1/2PT Water Flow Sensor Switch Control Meter Flowmeter, 1.5-30 L/min Product Name : Water Flow Sensor Switch; Working Voltage & Current : 5-18V, 15mA; Working Flow Rating : 1. 5-30 L/min Formulary : F=11Q+/-10% F:Hz Q:L/Min 1L=596pulses; Male Port Thread Dia : 20mm /1/2PT Body Size : 60 x 21mm / 2. 4" x 0. 8"(L*W); Cable Length : 15cm / 5. 9 Material : Stainless Steel; Color : Gold Tone Weight : 100g; Package Content : 1 x Water Flow Sensor Switch