Features Its integrative design convenient to carry outside for testing. Digital display with back light gives exact and clearly reading although you stay at the somber conditions. It is small in size, light in weight , easy to carry out for fieldwork if needed. Manual off at any time .Auto power off after 5 minutes from last operation. 3.Specification Display: 4 digital LCD Measuring range : 2% -60% Temperature: 0-60° Humidity: 5% -90% Resoluton: 0.1 Accuracy: ± 0.5% n Power supply: 4x1.5 AAA size ( UM-4) battery Dimensions: 460mm× 75mm× 35mm Weight: 203g ( not including batteries)