Smart capacitive proximity switch: Through an orientation mode, users can easily set the sensing range and the warning signa Smart flow sensor,Through an orientation mode,user can easily set up the flow range and the warning signal discretionarily.Sensing substance: Air, Liquid .Sensing range (Liquid/gas): 3...300/200...3000 cm/s.Mounting: M18 x 1.5.Output: NPN,PNP,Relay.Display: LED.Power ...