Maxim Integrated Products, Inc.

Thermochron iButton’s are the worlds smallest and lowest cost digital Temperature/Humidity Data Loggers that can go where ever your products go in the cold chain. The iButton's embedded computer chip integrates a globally unique address, a thermometer and/or hygrometer, a clock/calendar, a thermal history log and 512 bytes of additional memory to store user data, such as a shipping manifest. The reusable iButton logs data for more than 10 years or up to 1 million temperature measurements.