Features:

• Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
• Wet bulb measurements without slinging
• Calculates T1-T2 differential (Air Temperature minus External Probe Temperature) using optional probe (TP890) and T-2 Dew Point
• Unique sensor cap design twists to closed position for protection during storage
• Switchable °F/°C temperature units with 0.1° resolution
• Data Hold freezes current reading on display
• Max/Min readings
• Auto power off to save battery life
• RH300 complete with 2 AAA batteries
• External temperature probe (TP890) for differential measurements included

Specifications (Range, Max Resolution, Basic Accuracy):

• Humidity: 10 to 90%RH, 0.1%RH, ±3%RH
• Temperature (internal): -4 to 122°F (-20 to 50°C), 0.1°, ±1°F or ±0.6°C
• Temperature (external): -4 to 158°F (-20 to 70°C), 0.1°, ±1°F or ±0.6°C
• Dew Point: -90.4 to 122°F (-68.0 to 49.9°C)
• Wet Bulb: -6.9 to 122°F (-21.6 to 49.9°C)
• Dimensions: 7x1.9x1" (178.5x48.4x24.7mm)
• Weight: 3.3oz (95g)