The SDL350 saves data to an SD card in Excel format. Air Velocity/Flow meter with telescopic probe that fits into HVAC ducts and other narrow apertures. The telescoping probe has a maximum length of 7.05ft (215cm) with cable. The data sample rate is adjustable. 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 or flow and temperature at the same time. Record and recall MIN, MAX, Data Hold, and Auto Power Off. Comes with 6 AA batteries, an SD card, a telescopic probe with cable, and a protective carrying bag.