Extech RH305 Hygro-Thermometer Psychrometer Kit
Includes a RH300 with 33% and 75% calibration bottles, PC cable, and carrying case.

• Digital Psychrometer
• External Probe Temperature measurements for differential
• Calculates T1-T2 differential (Air Temperature minus External Probe Temperature)

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 T2-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
• Optional external temperature probe (TP890)
• Optional kit RH305 includes RH300, temperature probe, 33% and 75% calibration bottles, and carrying case

Specifications: