FLOW SENSOR,KEYENCE P/N.FD-P50,MAKE  IN JAPAN.
Specifications for your reference:

Model: FD-P50
Detection range:5 ~ 50L/min
Proof pressure: 1.0MPa
detection fluid : liquid
fluid temperature:2 0 ~ +100 ℃
Port size PT 3/4
Display type: flow indicator :green LED;error display: red LED
Ambient temperature: 0 ~ +60 ℃  
Ambient humidity:5-80% RH 10 ~ 55Hz
Quantity:200g

Delivery time:within 3days after receive the payment.
Payment mothod:TT/Western Union