Software & Cradle for ThermaData Logger Mark2: ThermaData USB Lead for use with the ThermaData Logger Mark2: USB Lead required to setup and download data from ThermaData Logger Mark2. The FREE downloadable software package enables you to specify logging interval, start delay, logger name, high and low alarms and file save format. Easy and intuitive to use. Made in Britain. Install the software before connecting the ThermaData Logger Mark2.