Ergonomic housing with large dual “smart” LCD where characters on display reverse direction depending on the function in use; low friction vane wheel improves accuracy of air velocity and air flow measurements; utilises precision photo diode and colour correction filter for light measurements; thin-film capacitance humidity sensor for fast response; thermistor measures ambient temperature; type K input measures temperature to 2372°F (1300°C) using optional type K probe; data hold and min/max; auto power off with disable feature; low battery and overrange indication; complete with built-in sensors, wrist strap, and 9V battery; and type K thermocouple probe sold separately.