The unit is perfect for environmental testing anywhere. It combines a light meter, humidity meter, thermometer and anemometer into a single compact unit weighing only 5.5 ounces. Own the equivalent of 4 meters for about the price of any one of them. This meter features dual display with low battery and over range indications, tough-tone button, max-min, auto power off and hold functions. Comes ready to use with a soft carrying case, wrist strap, instructions and a 9v battery. Dim: 6" x 2/5" x 1"