digital flow meter  (made by Digiflow USA)

• This meter shows you how much water has flowed through and how fast the water is flowing.
• Counting Up: 0 to 99,999 gallons
• Flow rate measuring range:  0.45 to 3.7 GPM (gallons per minute)
• 3/8" NPT female thread
• two 3/8" quick connect fitting included (for 3/8" OD tubing),  Optional: 1/4" quick connect fitting

Model: 6700M                

• Flow totalizing up to 99,999 gallons
• Flow rate display from 0.45 gallons per minute to 3.7 GPM
• Connection:  3/8” NPT
• Electrical:  3 DC Volt (two AAA battery)   1.0mA (display mode) 0.015mA (idle)
• Low battery power alert
• Automatic data saving when battery is out
• Reset button:  press and hold the button for 5 sec. to reset to zero
• Material:
• Sensor body: Acetal copolymer, TICONA M90
• Turbine:  Acetal Copolymer
• Turbine shaft: #304 stainless steel
• O-ring:  EPDM Rubber
• Housing:  ABS resin
• Dimension: 2 7/8" x 2 3/4" x 2”