Output Pulse Duty Ratio: 50% ± 10%. Type 1 Flow Eange: 01.5-1.5L/min; Type 2 Flow Eange: 0.2-3.0L/min; Type 3 Flow Eange: 0.25-3.0L/min; Type 4 Flow Eange: 0.3-4.0L/min. Water-flow Formula: 1L = 2650 pulse.
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