The Seametrics DL76 Data Logger is now obsolete. Data logging is now an option available with the FT430 or FT440 or FT450 Flow Rate/Total Indicators. For reference, the obsolete DL76 specifications were:
Mount: Wall mount
Power: Battery powered
Input: Maximum input frequency 500 Hz
Tamper Evidence: Tamper-evident kit option available
Includes: Battery
Not Included: Software downloaded separately
Weight: 2 lbs
Have a look at the replacement models and choose the unit that meets your needs: