The ECOLOG datalogger is offered in two- and four-temperature units along with a two-temperature and one-humidity-reading collector. The waterproof datalogger comes standard with a direct-reading LCD display, memory capacity of 64,000 data points, a temperature recording range of -58° to 287°F, and calibration certificates, says the company. The replaceable battery is said to last two to three years and comes with a low battery indicator. The software is designed to be easy to use, the company says.