ITEM NAME:1/2PT Water Flow Sensor Switch Control Meter Flowmeter 1.5-30L/min N4X6 1/2PT Water Flow Sensor Switch Control Meter Flowmeter 1.5-30L/min N4X6 Package Content : 1 x Water Flow Sensor Switch Material : Stainless Steel Color : Gold Tone Weight : 100g Used for water heaters, automatic water dispensers, good flow monitor devices. Stainless steel metal can be used for a long time and resistance rust. Product Name : Water Flow Sensor Switch Working Voltage & Current : 5-18V, 15mA Working Flow Rating : 1.5-30 L/min Male Port Thread Dia : 20mm /1/2PT Body Size : 60 x 21mm / 2.4" x 0.8"(L*W) Cable Length : 15cm Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..Used for water heaters, automatic water dispensers, good flow monitor devices. Male Port Thread Dia : 20mm /1/2PT.