The MT643 is a K-Type Temperature Data Logger and measures and stores over 32,000 temperature readings from -200°C to +1370°C. With its precision calibrated internal temperature sensor, all the user has to do is place the logger in the field and leave it until the desired information has been recorded. The user can easily set up the logger and view downloaded data for analysis by plugging the data logger into a PC’s USB port and using the free software. Displays all status information through two LED’s, and where user defined minimum/maximum values are exceeded, and alarm LED will flash. Selectable measuring cycles can be set up from 1 second to 12 hours.