The Lascar Electronics ELGFXD2 Dual Channel Temperature, Humidity, and Dew Point Data Logger with External Probe is a standalone data logger that measures and stores over 250,000 temperature and humidity readings over a -22 to +176°F (-30 to +80°C) and 0 to 100%RH range at a resolution of 0.2°F (0.1°C) and 0.1%RH.

Users can easily set up the logger and view downloaded data by plugging the data logger into a PC's USB port and using EasyLog USB software. Data can then be graphed, printed and exported to other applications.

The EL-GFX-D2 Data Logger features a high contrast dot-matrix LCD and three buttons to navigate through an on-screen menu. This menu provides the user with access to real-time trend analysis, data summaries and the ability to start, stop and restart the data logger without the need to connect the data logger to the host-PC. Users can reset the maximum / minimum reading using the on-screen menu; this introduces an 'event marker' into the data which can later be viewed in the graphing software ('Mark Events' option) and the data file after download.

The EL-GFX-D2 Ddata Logger is supplied with two lithium metal batteries, which can typically allow logging for up to 1 year. It can also be powered from USB.