The KeyTag Kt1LcdSu is an extremely accurate single-use temperature data logger with a detailed, multi-screen display. Every KeyTag Kt1 will be individually calibrated before it leaves us and will be delivered with a calibration certificate. The certificate can be found in the PDF file generated by the logger. For your convenience, all loggers are pre-programmed according to your specifications and sealed in a waterproof, FDA approved sleeve. The only thing you have to do is press the start button. The receivers of the loggers will also experience the ease of it. Simply tear off a piece of the sleeve and Plug-n-Play. Once plugged into the USB port the logger works like a USB stick. To read the automatically generated files, use the default office software. To open the KLG (log file) use the free KeyTag Manager Software.