Rotronic Instruments TL-1D Data Logger, USB Mini-Port

The Rotronic TL-1D is an economical and compact (90 x 60 x 23 mm) data logger which can log up to 32,000 temperature-measured values in a range from -20 to +70 °C (± 0.3 °C). All measurement values are stored within the instrument for download via the HW4 software, which enables graphical display of values and instrument functions such as the logging interval, logging mode and alarms. On the face of the instrument, the right LED flashes green every 5 seconds during data logging and the left LED flashes red every 5 seconds when values exceed/drop below the alarm settings or when the battery is low.

Measurement accuracy ± 0.3 °C
Compact design
IP67 rating
32,000 data point memory
MIN/MAX/AVG statistical function
Includes HW4-lite programming and analysis software (downloadable)
Clear LCD with visual alerts
Long battery life
Conforms to FDA 21 CFR Part 11 / GAMP 5

CR2 battery, short instruction manual, function and calibration certificate, HW4-lite software key code (for software download)

Single-digit 7-segment Blue LED displays from Broadcom (Avago Technologies).