The company offers battery-powered data loggers, including the Hobo Pro Series, a family of weatherproof data loggers for measuring and recording indoor and outdoor climate data, which can later be analyzed on a PC. The portable monitoring device can withstand harsh indoor environments as well as condensing outdoor conditions, officials say. Three models are offered, including single-channel temperature, two-channel temperature and relative humidity, and two-channel temperature. An Intrinsically Safe version of the two-channel temperature and RH logger is also available for monitoring conditions in hazardous locations where combustible gas or dust may be a concern. Each Hobo Pro logger provides plus/minus 0.3°C (plus/minus 0.5°F) accuracy and plus/minus 3 percent relative humidity accuracy with 12-bit resolution.

Onset Computer Corp., 470 MacArthur Blvd., Bourne, MA 02532; (800) 564-4377; fax (508) 759-9100; www.onsetcomp.com.