EXTECH SDL 500( HYGRO-THERMOMETER SD LOGGER)

Relative Humidity, Temperature, Dew Point, and Wet Bulb measurement
Adjustable data sampling rate
Stores 99 readings manually and 20M readings via 2G SD card
Type K/ J Thermocouple input for high temperature measurements
Large backlit dual LCD display
Record/ Recall MIN, MAX, Data Hold and Auto power off
Built-in PC interface
Complete with 6 x AA batteries, SD card, carrying case and Humidity/ Temperature probe