The VFC800-USB 10 Foot Dual Smart Probe Temperature Recorder measures and stores up to a total 32,000 temperature readings, 16,000 readings per channel. The logger supports the ST100 and SP-800 probes and can be used on one or both channels if required. It features a large easy-to-read display and is designed to show ‘at a glance' if temperature excursions have occurred during the current day and up to the previous 29 days. If temperature readings are outside pre-set alarm limits, it is indicated by a large X on the display and, if configured, the audible alarm will sound. Calibration is made easy by using an SP-800 Smart Probe, when it's calibration time there's no need to relocate the logger, just replace the probe.