HTC Brand: EASY LOG Temperature Humidity Data Logger. Memory for 32,700 readings. LCD to show logging information easily. Free selectable measurement cycle from 1sec to 24hrs. Battery life: more than 3 years (Under Ideal condition at 22oC). Display all status for Alarm and Record through 2 LED’s. Alarm display if user-defined max/min values are exceeded. Analysis software used to view graphically or Text mode for logging data. USB Computer Interface: (Advanced Software Program for all windows.