FlashLink® Certified Vaccine Data Logger

Model 20938

FlashLink Certified Vaccine Data Logger

The FlashLink Certified Vaccine Data Logger with Glycol Bottle, Model 20938, is designed for monitoring temperature conditions inside storage units where vaccines and other temperature sensitive pharmaceuticals are kept. This reusable logger features a large, easy-to-read LCD and an external probe sealed in a 5mL glycol bottle. The glycol prevents false alarms by buffering the probe against sudden and expected temperature fluctuations during normal use, such as frequent door openings and cycling of the refrigerator or freezer. The glycol also emulates temperature changes experienced by most common fluids in storage, to give more accurate readings. The logger attaches to the outside of the storage door, while the sensor bottle is placed inside, allowing users to read current and minimum/maximum temperatures without opening the unit. A red LED alarm and low battery indicator are also visible on the display. This logger is prequalified by the World Health Organization (WHO) as an E006 Temperature Monitoring Device, under their Performance Quality Safety code PQS E006/026, and is compatible with FDA, CDC and WHO guidelines. Certificates are available for ISO 17025 and NIST calibration.

  • Large, easy to read LCD Display
  • Certified, NIST traceable
  • Remaining Battery Indicator on LCD (low battery)
  • Detachable external temperature sensor, sealed in 5mL glycol bottle
  • Hi/Low programmable alarms for out of range conditions
  • User programmable logging intervals
  • USB Connection
  • Temp range -40˚F to 104˚F / -40˚C to 40˚C
  • 32,496 data points



Model 20938 FlashLink Certified Vaccine Data Logger with Glycol Bottle
Feature Specification

DeltaTrak manufactures products under an ISO 9000 registered quality management system

To download a pdf version of this specification sheet please click here In-Transit Data Logger

* Polyethylene terephthalate copolymer
** Generally Recognized As Safe
Measurement Range -40°F to 104°F (-40°C to 40°C)
Temperature Resolution 0.1°F/°C
Accuracy ±1.0°F from 14°F to 77°F (±0.5°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

32,496 data points

Data Download Time 2 seconds typical for 3823 points
Programmable Alarm Levels High & Low levels over entire range, displayed on LCD
Battery Coin Cell Lithium battery, LCD % remaining power indicator
Dimensions/Body 1.575" x 3.189" x .575" (40mm x 81mm x 15mm)
Logger Casing PC/ABS plastic
External Bottle 5mL PETG* Sterile Bottle - 21CFR compliance information available
Glycol Buffer Propylene glycol (GRAS** classified)
Weight 2.56 oz. (70 grams)
Certification CE Mark, NIST traceable, RoHS Compliant
Display LCD, Red LED Alarm
Waterproof Rating IP64 (with silicone cap)
Storage conditions -4°F to 122°F (-20°C to 50°C) 0% to 95% RH w/o condensation
Shelf Life 2 years
Min. System Requirements Windows PC with XP or higher
Download Requirements Direct USB connection to PC, FlashPDF Program Manager Software v4.5 or higher