Extech RH390 Precision Psychrometer

Features:
• Dual backlit display
• Simultaneous display of:
        Humidity/Temperature
        Humidity/Dew Point
        Humidity/Wet Bulb
• Slim design with rubberized sides for better grip and for one hand operation
• Data Hold and Min/Max functions
• Auto power off with disable and low battery indicator
• Complete with carrying case and 9V battery