The Lascar Electronics EL-GFX-2+ High Accuracy Temperature/RH Data Logger with Graphic Screen measures and stores up to 252,928 temperature and humidity readings over a -30°C to +80°C (-22°F to 176°F) and 0 to 100% RH range at a resolution of 0.1ºC (0.1°F) and 0.1% RH. Using EasyLog Control Software, the user can quickly set up the logger name, sample rate, alarm settings, and start mode (immediate start, push to start, delayed start, and temperature/humidity triggered start). This software can later be used to download the stored data which can be graphed, printed and exported to other applications. The data logger features a dot-matrix LCD and three face-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 a 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.