A multi-channel data logging thermometer that can display up to 4 readings at once and works with Type K, J, R, S, E, T thermocouples as well as RTD probes across a wide range down to about -200C and up beyond 1300C depending on probe type. It logs directly to a removable SD card (up to 16GB) at user-set intervals from 1 second to an hour, and includes max/min, differential, and data-hold functions on its backlit display.