Research has shown that prolonged exposure to extreme heat can degrade the strength of epinephrine, making it potentially less effective when administered. The recommended temperature perimeters are very specific, according to most auto-injector recommendations by manufactures. Now, with ability to monitor potential compromising temperatures, this increases safety and effectiveness to those who may need it and to know when to seek replacement. Most auto-injector manufacture temperature recommendations are 68-77° Fahrenheit (20-25° C). This easy-read, stick on thermometer has a range of 64°-94°F, making it the perfect range to alert you that an extreme heat event is occurring, and to seek cooling intervention immediately. This 2-pack can be split among two different sets of auto injectors to protect multiple auto-injectors! (AUTO-INJECTOR NOT INCLUDED) For more information, food allergy products and support, visit www.foodallergiesforbeginners.com