FlashLink® VU In-Transit Logger

Model 20741-20744

  • Large, easy to read LCD display
  • Trip history statistics available on LCD
  • Patented Shadow Log™ feature guarantees data even if the operator fails to start the unit, single-use
  • Print data using Graphics Printer, FlashLink Data Manager software or download to PC
  • NIST traceable and CE Mark
  • IP56 water-resistant rating
Applications: Transport, Cold Storage, Processing Facilities

The FlashLink® VU logger allows for access to temperature history data without having to stop the unit or download the data. DeltaTrak's patented Shadow Log™ feature guarantees temperature history data even if the operator fails to start the logger. The single-use FlashLink® VU temperature logger is packaged in a highly visible yellow sleeve with easy to follow instructions and helps the receiver locate the logger very quickly.

The new FlashLink® VU logger is the ideal device for recording storage and transport conditions of temperature-sensitive products. This in-transit temperature logger has a large easy to read LCD display that provides immediate temperature status information and trip statistics including upper and lower temperature limits, cumulative duration of any temperature excursions, highest temperature, lowest temperature, and average temperature.


Models °F Recording Period Logging Intervals
20741 5-Day 1 min 54 sec
20742 15-Day 5 min 40 sec
20743 45-Day 16 min 58 sec
20744 75-Day 28 min 16 sec


FlashLink® VU In-Transit Logger
DeltaTrak manufactures products under an ISO 9001:2015 registered quality management system
Measurement Range -40°F to 150°F (-40°C to 65°C)
Temperature Resolution 0.1°F/°C
Accuracy ±1.0°F from 14°F to 77°F (±.5°C from -10°C to 25°C);
±2.0°F above 77°F (±1.0°C above 25°C)
±2.0°F below 14°F (±1.0°C below -10°C)
Data Capacity 3824 points
Data Download Time 5 seconds typical for 3800 points
Factory Programmable High & Low levels over entire range, displayed on LCD
Battery (CR2032) 3V Lithium/18 months
Dimensions 1.962" x 3.423" x .575" (50mm x 87mm x 15mm)
Casing ABS plastic
Weight 1.6 oz. (45.36 grams)
Shock Resistance Withstands 3-foot (1 meter) drop to hard surface
Certification RTCA/DO 160 compliant, CE Mark, NIST traceable, ROHS Compliant
Display LCD, Red LED Alarm
Waterproof Rating IP56
Storage Conditions -4°F to 122°F (-20°C to 50°C) 0% to 95% RH w/o condensation
System Requirements Windows PC with current operating system, FlashLink Data Manager, Adobe Reader
Download Requirements FlashLink 8-Pin to USB High Speed Adapter Kit


High visibility shipping sleeve.


FlashLink Data Manager 6.7.2 + 8-Pin Adapter

Last Revised - 06/14/2021

FlashLink Data Manager is a simple program used to create a locked PDF file with data downloaded from any FlashLink data logger. Once installed on a Windows PC, the program runs automatically when a data logger is connected via the USB adapter. The PDF is then created, saved, and displayed on screen automatically. These PDF files can easily be archived and emailed.

Connecting a FlashLink 8-pin data logger to a USB port requires the use of the DeltaTrak 8-pin to USB adapter. FlashLink Data Manager has been optimized to work with the DeltaTrak 8-Pin to USB High Speed Adapter and is available for ordering below. To learn more about the 8 Pin to USB High Speed Adapter Kit click here to view the Spec Sheet.

FlashLink Data Manager Installation Instructions


Model 20719: FlashLink 8 Pin to USB High Speed Adapter Kit

  • Eight pin to USB adapter
  • USB extension cable included

Download FlashLink 8 Pin to USB High Speed Adapter Kit Spec Sheet

Model 20719 - FlashLink 8 pin USB Adapter Kit