The SDL310 saves data to an SD card in Excel format. Air temperature is measured to 122°F (50°C), and air velocity is 4930 feet per minute. Stores 99 manual readings and 20M readings on a 2GB SD card. Stores 99 manual readings and 20M readings on a 2GB SD card. Type K/J thermocouple input for high-temperature measurements. The large (9999 count) LCD displays both air velocity and temperature. On a 39-inch vane wheel, low friction ball bearings provide 2% velocity accuracy. (1 m) cable. Record/recall the minimum, maximum, data hold, and auto power off. The data sample rate is adjustable. Comes contains 6 AA batteries, an SD card, a vane sensor with a 3.9ft (120cm) wire, and a protective carrying bag.