The AET-175 is a compact and easy-to-use dual channel data logger for efficient monitoring and data collection of temperature and humidity values. Ideal for monitoring food, medical product storage, warehousing and distribution, containers, industrial processes, laboratory environments, museums and libraries. -40 to 70C x 0.1C 0% to 100%RH x 0.1%RH Measures C or F USB interface for set-up and data transfer to PC or laptop Set-up allows the user to select logging rate, unit of measurement, recording settings, alarm limits and to enable & disable LEDs User selectable logging intervals From 1 second up to 24 hours Logs up to 16,350 temperature and 16,350 humidity readings Green LED for logging confirmation 2 programmable alarm thresholds (high/low) Red LED if alarm limits are exceeded Large 29mm LCD display for time and date changes between the date & time every 10 secs and current readings Min/max values and logger full indicator Low battery indication Impact-resistant ABS and rubber m