How to Choose a Temperature Data Logger for Vaccine Storage

Learn Tips to Help Protect Your Valuable Vaccine Inventory

Vaccine Storage Data Logger ApplicationWhen vaccines aren’t maintained at the proper temperature (commonly 2-8°C), they quickly lose their potency so that children are at risk for infectious diseases. A vaccine temperature data logger is a cost-effective way to stay in compliance with CDC recommendations concerning proper vaccine storage. Learn the basics of these time-saving devices from distributor CAS DataLoggers!


The CDC’s 2020 Vaccine Storage and Handling Toolkit states that the surest way to avoid losing valuable vaccine supplies is to use a temperature monitoring system for every medical storage unit in your facility. These systems consist of one or more data loggers sending the temperature data over a network, to a wireless gateway nearby, or to the cloud itself.

Connecting with temperature sensors such as Thermocouples and RTDs, temperature data loggers automatically record medical refrigerator and freezer temperatures. Just place the temperature sensor’s probe into a vial of glycol to act as a buffer, then place the probe into the storage unit. This makes them ideal for clinics, health departments, pharmacies, and medical manufacturers alike.

Checking Vaccine Temperature

If you want a data logger with an LCD display, be sure that it shows the following:

  • Current temperature values (check at least 2x/day in the morning and afternoon)
  • Min/max temperature values
  • Battery indicator
  • Alarm indicator (visual + audible alert)

You should immediately contact your Immunization Program if:

  • Your vaccine temperature data logger shows a temperature outside of 2-8°C
  • Your logger goes into an alarm state

Downloading and Viewing Data

Nowadays, data loggers offer users several ways to retrieve temperature data. This electronic documentation is proof to regulators that your facility follows best practices. Choose the most convenient method for your building’s layout and network:

  • A simple way to do this is by getting a USB data logger for quick data retrieval. Just remove the memory stick from the logger’s USB port, plug it into your PC, and download the data.
  • Ethernet and Wired LAN data loggers are popular as a low-cost way to monitor small groups of storage units. Using a PoE (Power over Ethernet) connection, these recorders monitor current conditions via a wired or wireless LAN.
  • If you have a wireless network in your facility, Wireless temperature monitoring systems are ideal for monitoring distributed storage units. For example, you can monitor several refrigerators located in different rooms on the same floor. These loggers automatically transmit data over the network to a PC for later viewing. Wireless systems most often consist of one or more loggers sending their data to a wireless gateway, although others only require you to buy a single logger. Wireless systems are available for many different wireless standards including WiFi, Bluetooth, Zigbee, and more.
  • Cloud systems are wireless data loggers which can automatically post all the temperature data online to a cloud storage server. From there it can be viewed by multiple designees from any Internet-enabled location. Using an online monitoring plan, you can view temperature data from any number of medical storage units in real-time, giving everyone an instant heads-up when any value goes outside safe temperature windows.

*Note that regardless of your particular system, you’ll want to download the vaccine temperature data at least once a week.

Customizing Temperature Alarms

Data loggers support a wide range of alarm capabilities for both local and remote notification.
You should also strongly consider using a manufacturer whose models use a remote server system with redundant power—this way if your facility’s power or Internet service fails, you’ll still immediately get an alarm.

  • SMS text messaging: Data loggers designed for the medical industry often include this popular feature, which sends out alarms directly to users’ mobile devices.
  • Warning emails: As with SMS messaging, warning emails can be instantly acknowledged by smartphone and tablet users. This feature is especially useful for technicians and facilities managers who may not be in their offices at a given time.
  • Pages/Voice messages: More advanced systems can even make sequential calls from a custom callout list of recipients to ensure that alarms are immediately received.

The Data Logger Experts

At CAS DataLoggers, we work with temperature monitoring applications daily, providing solutions for healthcare, manufacturing, and many other industries. We have been in business for over 20 years, and our staff has over 100 years of total experience with data logging equipment.

We can help you to select the most appropriate product for your application, and also recommend sensors and transducers to go with the data logger. Our value-added services include on-site installation, engineering, and design services, and complete turn-key systems.

For more information on Vaccine Temperature Data loggers, or to find the ideal solution for your application-specific needs, contact a CAS DataLoggers Application Specialist at (800) 956-4437 or request more information.