Take this this handy humidity and temperature gauge on the go and rely on a long-lasting 3V lithium battery for maximum usage time. This slim measuring tool will capture humidity readings from 10 to 90% RH and register temperatures from 14? to 122? (-10 degrees to 50?). It?s an ideal tool for field work and a nice accoutrement for outdoor lovers. This utility tool will store maximum and minimum readings until the memory is cleared and includes a data-hold button for rapidly fluctuating measurements. Includes meter with pocket clip and 3V lithium battery.