Optional three-year battery for long-term recording High accuracy and repeatability ... Use these high-accuracy data loggers in a multitude of applications. From monitoring food transport conditions to keeping track of temperature and humidity in HVAC, pharmaceutical transports, or lab and museum environments. These compact data loggers will fit anywhere and are simple to use. Each data logger is a battery-powered stand-alone unit that records up to 64, 000 sets of temperature and relative humidity data. Choose from a model with a standard battery or long-life battery. Easily configure units using the included Track-It software. Simply plug the logger into an open USB port on your PC and the software automatically identifies the logger; USB interface cable sold separately. Configure the unit to start and stop recording at a predetermined time and date or only when an alarm condition is sensed. The sample storage rate can be set from 1 sample every 2 seconds to 1 sample every 24 hours. A splash-proof protective cover protects the logger when in use. Track-It software and battery This listing is for Each.