Extech RH300 Hygro-Thermometer, Psychrometer, RH/Temp/Dew-Point/Wet-Bulb, Compact, Data Hold

• 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-External Probe Temperature) using optional probe
• Unique sensor cap design twists to closed position for protection during storage
• Switchable °F/°C temperature units with 0.1° resolution

The RH300 is a compact meter that is ideal for field applications. Simultaneously displays relative humidity (10% to 90% RH), air temperature and dew point or wet bulb. Calculates T1-T2 differential (air temperature minus external probe temperature) using optional probe (TP890), and T2 minus dew point. Built-in protective sensor cap. Other features include Data Hold, Auto Power Off, and MAX/MIN reading. Complete with 2 AAA batteries.