The PRTC 110 Data Logger is a miniature battery-powered stand-alone pressure, humidity, and temperature data logger. The PRHTemp110 features a real-time clock module that extends the battery life to > 10 years and allows for high-speed downloads. This is an all-in-one compact, portable, easy to use a device that will measure and record up to 13,107 measurements. The storage medium is non-volatile solid-state memory, providing maximum data security even if the battery becomes discharged.