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LOGiT Series data loggers are designed with the latest technology. Economic, compact and easy to use. Select the proper logger for your application, along with the LOGiT software interface package (LLSU).


  • Data exportable to text or Excel® files
  • Stores over 10,000 measurement points
  • Two independent, 6 foot external stainless steel tip sensors
  • 30 character user ID field
  • Recording Start, on button, immediate after setup, or user specified date & time
  • System requirements: 5MB free disk space, 800 x 600 screen resolution, 1 free USB port
  • Tamper proof
  • Over / Under Alarm settings with visual indicator
  • Real time data monitoring
  • Compatible with Windows® 2000, XP, Vista and Windows® 7/8/ & 10. 32 and 64 bit systems
  • Sample rate 1 second to 18 hours
  • Memory rollover, or stop on memory full
  • Password protected, user selectable single point offset calibration available through software
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Temperature Accuracy: ± 2°F (± 1°C)
Storage Temperature: -40°F to 150°F (-40°C to 65°C)
Operating Temperature: -50°F to 300°F (-46°C to 150°C)
Refrigerators / Freezers
Commercial refrigeration
Medical storage facilities
SDS Product Sheets Cross Reference Information
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Manuals Application Sheets Software
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No Cross Reference Available

Do the loggers have a recommended calibration interval?: We do not have a recommended calibration interval. Calibration can be performed through the software at any time.
Can (1) LLSU be used with multiple loggers?: Yes.
Is there a manual for the Loggers?: The manual is built into the software. Open software, Click 'Help' on the Toolbar, then click 'Help Topics'. This is the manual.
How do I clear the logger data?: Logger data will be cleared upon starting a new logging session.
Can LOGiT series loggers be used without the software?: No, all LOGiT series loggers must be set up in the software, and data retrieved via the PC.
Is the software updated to Windows 10?: Yes.
My PC does not have a disc drive, how can I install the software?: Pick 'Downloads' tab. Select 'LTT_swr_251.exe' to download.