General Tools Digital Thermo Hygrometer Psychrometer for Ambient Temperature Relative Humidity Dew Point and Wet Bulb Temperature EP8709 - The Home Depot

Highlights

Jumbo backlit display with 2-line readout
• Field calibratable using 33% and 75% salts (not included)
• Data hold and minimum/maximum functions
• °F/°C switch
• 20-minute auto power off function
• Low battery indicator
• NIST calibration is available
• Use in: office buildings
greenhouses food and equipment storage facilities wineries freezers shipping containers computer rooms labs libraries museums and saunas
• Powered by 9-Volt battery (included)