Designed for critical temperature monitoring applications where accuracy, flexibility & alarming within extreme environments are required. Add to any freezer, cooler, or any indoor / outdoor application. Log, store, report, alarm & geo-track anywhere in the world! WiFi wireless & battery operated makes for a true IoT temperature sensor for any application. SwarmTemp is sealed, tamper proof & requires no cables. Some features of the SwarmTemp App will require a SwarmTemp Sensor that can be purchased at https://www.sensor-swarm.com/