For those applications where only one temperature is read at a time, the TM99A is an industry standard. It features Min/Max memory, hold, auto shut-off. It is housed in a rugged polyethylene storage case with a sealed membrane and has a backlight for dark environments. The TM99A includes a carry case and 1075 general purpose probe. Thermistor Temperature Instr w/1075 Probe & Case -40/300°F/°C