A data logger for use with a dental or medical autoclave is disclosed. The data logger receives data transmitted from the autoclave and stores the data on secure digital memory. The data logger assigns a cycle number to data received associated with a particular sterilization cycle and stores the data associated with this cycle number on the memory until the associated sterilization cycle is complete at which time a new cycle number is assigned to the incoming data associated with a new sterilization cycle. A visual display is provided that displays the data associated with the various stages of a sterilization cycle of the autoclave in real-time for quick reference and verification. The data logger provides for compact and convenient data storage of dental sterilization cycles for record keeping and verification purposes.