The Hygrochron family of iButtons (DS1923) adds an embedded humidity sensor to log both temperature and humidity. From the iButton Product Group of Dallas Semiconductor/Maxum, the iButton is a computer chip with a globally unique address, factory-lasered at time of manufacture, enclosed in a 16-mm stainless-steel case. They deliver or record data where needed.
Digital temperature and humidity data loggers
The Thermochrom family of iButtons (DS1921/DS1922) temperature data loggers track temperatures of vaccines, drugs, and reagents.
Oct 10, 2006
