Description Room Temperature and Humidity Meter | IR Hygrotemp Technical data Temperature range -20…50 °C Accuracy ±0,6 °C f.m. Resolution 0,1 °C Infrared Temperature range -40…500 °C Accuracy ±2 % or ±2 °C (-20…450 °C), rest ±3 % or ±3 °C f.m. Resolution 0,1 °C Response time 500 msec. Ratio 8:1 Humidity range 0…100 % (not condensing), ±3 % at 10…90 %, rest ±5 % Resolution 0,1 % Wet bulb temperature -21,6…49,9 °C Emission factor 0,30…0,99 adjustable Display 3-line LCD Current supply 4 x 1.5 V micro battery Size 170 x 50 x 70 mm Weight 170 g (without case) Room Temperature and Humidity Meter | IR Hygrotemp