NCV (non-contact voltage detector) probe with integrated indicator light NCV Voltage Sensitivity 50 to 1000VAC (50/60Hz) Less than 1 Inch detection range Built-in IR Thermometer for non-contact temperature measurements from -20 to 445"F (-30 to 230"C) with 0.1" resolution 9,999 count LCD displays temperature with selectable "F/"C internal switch