• Measures relative humidity from 0 to 100% and temperature from -4 to 140° F (-20 to 60° C)
• Accuracy ±2% from 20% to 90%; ±1.8°F (±1°C)
• Dual display of humidity and temperature or humidity and dew point or humidity and wet bulb
• Capacitance sensor responds under to humidity changes in under 30 seconds
• Slim design with rubberized ides for better grip

Measure humidity and temperature simultaneously with the RH390 Precision Psychrometer from Extech. A dual-illuminated readout can be alternated to display wet bulb and humidity, or dew point and humidity, or temperature and humidity. This handheld device registers temperatures from -22 degrees to 199 degrees F (-30 degrees to 100 degrees C) and measures the full spectrum of relative humidity with ±2% accuracy between 20 and 90% RH. Complete with carrying case and 9V battery.