Store up to 10,000 readings for each channel with a perpetual calendar real time function. The unique CALL-FIT function allows you to read & search the desired log data from memory at a speed of 50 pages per socond. All the data collected by the data-logger during long-term monitoring can be transmitted to computers for further analysis using Windows® software. Probes for this device are sold separately. See our H2 Series roller, magnetic, and/or general surface probes. Data logging software and a USB cable is included with this meter.