Extech SDL200 4 Channel Thermometer Data Logger

4-Channel datalogging with 6 Thermocouple types (J, K, E, T, R,S) and 2-Channel datalogging with RTD (Pt100Ohm) probes Displays [T1, T2, T3, T4] or differential [T1-T2] reading Offset adjustment used for zero function to make relative measurements Stores 99 readings manually and 20M readings via 2G SD card Records readings with real date and time stamp