Simply insert any of these compact, 4.5" (11.4 cm) long loggers into your computer USB port, name it, choose your required sampling rate, select high and low alarms if required, and set the logger start time. Once configured, the logger can be removed from the computer to log independently. Data is downloaded back onto the PC where it can be analyzed and viewed as a graph using included software. These data loggers measure temperature and humidity from 31 to 176°F (–35 to 80°C) and 0 to 100% RH, calculate dew point, and store over 16,000 readings per parameter. Model EL-USB-2-LCD+ features a 2.5-digit LCD showing the latest logged values, min/max log, and have immediate, delayed, push-to-start logging, and increased humidity measurement accuracy. What's included: configuration software and battery.