The SDL300 records data on an SD card in Excel format. Metal Vane withstands temperatures to 158°F (70°C) and air velocity to 6900ft/min. Datalogger date/time stamps and stores readings on an SD card in Excel format for easy transfer to a PC. Adjustable data sampling rate from 1 to 3600 seconds. Stores 99 readings manually and 20M readings via 2G SD card. Type K/J Thermocouple input for high temperature measurements. Large (9999 count) LCD displays Air Velocity and Temperature simultaneously. 2% velocity accuracy via low friction ball bearing vane wheel on 39″ (1m) cable. Record/Recall MIN, MAX, Data Hold, Auto Power Off. Complete with 6 x AA batteries, SD card, metal vane sensor with 3.9ft (120cm) cable, and hard carrying case.