Ambient Weather WS-HE01 Handheld Heat Stress Index, Dew Point Monitor with Temperature, Humidity

Features:
Heat Index Range Indicator Arrow
Calculates Heat Index and Dew Point
Measures Temperature and Humidity
Time clock
Audible and Visual Alarm
Calibration Adjustment Mode
Lanyard
Specifications:
Temperature Range: 14 to 140 °F
Temperature Accuracy: ± 2 °F (without calibration)
Temperature Resolution: 0.1 °F
Humidity Range: 20 to 99 %
Humidity Accuracy: ± 5% (without calibration)
Power Consumption:
2 x AA 1.5V Alkaline or Lithium batteries (not included)
Battery life: Approximately one year
Dimensions: 3.5 x 3 x 1"